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Leupold Zero Point Boresighter

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Topic: Leupold Zero Point Boresighter
Posted By: Brady
Subject: Leupold Zero Point Boresighter
Date Posted: April/29/2005 at 12:41

http://www.swfa.com/p-3659-leupold-zero-point-boresighter.aspx - Leupold Zero Point Boresighter

 

1. Ensure that the muzzle and Zero Point surfaces are clean. Place the Zero point magnet on the muzzle, then slide the Zero point up or down to match the riflescopes height so the lens is in the center of the riflescopes line of sight. The inch scale marked on the housing can be used to set the scope height. Set the riflescope magnification to give the best image size of the Zero Point's grid pattern starting on low magnification. The back illumination can be used to improve the contrast of the grid pattern.
 
2.Align the Zero Point on the barrel so that when you look through the riflescope, the image of the grid pattern is square with the riflescope's
 
 
3. If the riflescope has not been zeroed before, simply set the reticle to the center of the grid of the Zero point by adjusting both windage and elevation adjustments. This will set the sight in line with the bore. (Rifle muzzles are carefully machined to be square to the bore as this is important to maintain accuracy.) While adjusting the reticle to match the grid and viewing through the scope, the reticle will move opposite of the adjustment markings. For example, if your reticle is low, you must move your elevation adjustment down for proper alignment of the reticle to the Zero Point grid.
 
4. At the range, with the riflescope preset and the Zero Point removed, the rifle can be fired at a target, say at 100 yards. The first shot should be "on the paper" then adjust the reticle to the point of impact for your exact zero at that distance. The unique Bi-View feature of the Zero point allows you to see the target and the grid pattern a well as the reticle. This allows the reticle to be adjusted to the point of impact - while the grid pattern is held centered on the target. Using this method a rifle can be zeroed using a single shot.
 
 
Range Calibration
 
After the rifle has been zeroed, replace the Zero Point and note where your reticle is in relation to the Zero Point grid, mark this on your range card for future reference. You can then repeat this for other distances or bullet weights. At any future date, for example at a hunting camp or at a range in a competition, you can recheck your sight for an accurate zero position at any of the marked positions on the Range Card without having to test shoot the rifle.
 
FACTS:
 
- Amber Illumination for easy viewing.
- Easy sight in
- One shot zero technology
- Check your zero
- Set new ranges
- Works on any caliber firearm
- 595 Nanometer high efficiency LED
- 25 hours of continuous battery life
 
 
http://www.swfa.com/p-3659-leupold-zero-point-boresighter.aspx - Get yours here.

 

                       




Replies:
Posted By: bluetentacle
Date Posted: October/19/2005 at 01:20
Brady, I've read a lot about this boresighter, and yet I am still as befuddled as ever about how it actually works.  How do you ensure that the boresighter is positioned precisely the same way every time you mount it, both horizontally and vertically?  This seems to be necessary to check zero with it.


Posted By: Brady
Date Posted: October/19/2005 at 08:08

Copied from Leupold's web site:

 

 

As the light rays traveling from the Leupold ScopeSmith Magnetic Boresighter (the Boresighter) to the objective lens of the scope are parallel to the bore of the firearm, the vertical or horizontal position of the Boresighter on the crown of a firearm barrel does not affect the scope settings necessary to get the first shot "on the paper" at a distance of 100 yards. Scope Alignment with the Bore of the Firearm The purpose of any scope mount is to hold the scope used on the firearm in optically parallel alignment to the bore of that firearm. As there is always to be expected a certain amount of minor deviation from this parallel due to the configuration of receivers and other mechanical tolerances, scopes and some mounts are designed with adjustment mechanisms to correct this deviation. There are also mounts, primarily intended for long range shooting, which are designed deliberately to bring the scope off parallel with the bore in order to allow the elevation adjustment dial of the scope to be set at a low extreme and thus allow for more elevation to be made available to compensate for large amounts of bullet drop at long distances. What must be remembered is that for getting "on the paper", the physical alignment of the scope main tube with the bore of the firearm is not as important as the optical alignment of the scope viewing direction with the bore of the firearm. It is this optical alignment of the scope that is at the heart of the initial stages of sighting-in a scope and it is what the Boresighter does. Once a shooter is "on the paper", the actual point of impact can be observed and minor adjustments can then be made to the direction of the scope's optical axis to hit the bull's eye. How the Boresighter Works in Conjunction with the Firearm The Boresighter attaches to the crown of the muzzle of the firearm by means of a magnet. This magnet is designed to be perpendicular (at a 90º angle) to body of the Boresighter. It is assumed that the surface of the crown of the muzzle on the firearm is itself perpendicular to the bore of the firearm. (It is important to be certain that the crown of the barrel is free of debris before attaching the Boresighter to it as such debris could alter the angle at which the Boresighter attaches to the crown.) Therefore, when the Boresighter is attached with the magnet to the crown of the firearm, the optical axis of the boresighter is assumed to be in parallel alignment with the bore of the firearm. How the Boresighter Works in Conjunction with the Scope The target grid of the Boresighter is illuminated by ambient light from behind through a translucent white panel, thus presenting its image through the lens of the Boresighter to the objective lens of the scope being sighted. The Boresighter's lens is permanently focused to make the target grid seem to be positioned a great distance away from the scope, just like a target on the range. How the Scope Works in Conjunction with the Boresighter Because the Boresighter body is positioned so close to the objective lens of the scope and since the optical system of the scope is designed to clearly view objects at great distances rather than a few feet away, the target grid of the Boresighter is seen through the scope as the primary image in the field of view, with the edges of the Boresighter indistinct and disappearing into the background image. When the scope's objective lens receives the image of the target grid from the Boresighter, it processes the light rays that contain the image through its internal optical system, finally concentrating it on the plane of the reticle and projecting the resulting combined image of reticle and target grid through its ocular lens to the eye of the person sighting the scope. The Key Concept: Parallel Light Rays It is an optical property of riflescopes that all light rays entering the objective lens of the scope that are parallel to one another will be focused by the scope in the same place within the scope, regardless of where they strike the face of the scope's objective lens. It is this fact that allows the Boresighter to be placed (so long as it remains in an upright, or 12 o'clock position), in various vertical and horizontal locations on the muzzle of the firearm (that is, at various points on the x,y axis) without any reduction of its effectiveness. The image of the target grid from the Boresighter is presented to the objective lens of the scope by light rays that all travel parallel to the direction of the bore of the firearm. Thus, the location of the image of the boresighter scale seen in the scope is independent of the location of the Boresighter on the muzzle and is in the same direction the bore is actually pointing. Why the Target Grid Seems to Move During Scope Adjustment It has been established that so long as the rays of light carrying the image of the target grid enter the objective lens of the scope parallel to the bore of the rifle, the target grid image will appear in the same place in space, relative to any distant objects in the field of view, regardless of the physical position of the Boresighter on the muzzle. Yet when the windage and elevation adjustment dials of the scope are turned, the image of the target grid appears to move in relation to the reticle. This is due to the fact that these adjustment dials move the optical axis of the scope relative to its mechanical axis by making very small tilts of the internal erector system. The reticle is fixed relative to the mechanical axis of the scope, but the direction of the optical axis (the center of the field of view) is not. So by moving the windage and elevation adjustments, the image of the target grid (the bore direction) can be moved and made coïncident with the center of the reticle. A Note Advising Against Using the Boresighter with Non-magnified Reflex (Red Dot) Sights Due to the fact that non-magnified reflex sights (such as the LG-1 and LG-35) do not offer magnification of the target to the shooter, the use of the Boresighter with these products is not recommended. It would simply be too difficult to use as the image of the target grid presented to the shooter would be too small to be of any benefit.



Posted By: bluetentacle
Date Posted: October/19/2005 at 09:44
Thanks, Brady.  I just got this delivered from you and it has dawned on me now.  As I look into its lense and then move the boresighter left and right, up and down, the grid pattern stays in a fixed position in space--rather like the reticle of a scope, in fact.  You only need to make sure it's upright when mounting it on the muzzle.  Brilliant!

Can't wait to try it on my new rifle, which I'll pick on Friday.  Since there's a paucity of personal testimonies on the Web about this product, I'll send a short report on this when I'm done.


Posted By: Silver Bear
Date Posted: November/05/2005 at 10:29

     Trying to site my new rifle in with Leupold Zero Point Boresighter. Every time I put the boresighter on the muzzle I get a different result on the grid pattern. How do I get a consistent readout on the boresighter grid pattern? Also in paragraph 3 of the instruction it says to move the reticle opposite of the adjustment markings.  Does this mean that if my shot on the target is 1 inch low and 2 inches to the right of center at 100 yards, I move the elevation down 4 clicks (1/4 inch per click) and windage to the right 8 clicks. I have mounter a Bushnell Elite 3200 #-9 by 40 Firefly scope. I have never used a boresighter before and am confused by the directions.

Thanks,

Silver Bear



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Silver Bear


Posted By: midi
Date Posted: December/15/2005 at 21:05
Brady, could you provide a link for the Leupold web page?

I've only managed to find very scant info on the boresighter at:
http://www.leupold.com/products/accessories_mounting.htm



Posted By: Brady
Date Posted: December/16/2005 at 08:05

 

 

The Leupold Answer Guide

 

http://www.leupold.com/resources/MyInfo81/Answerbook/findanswers.aspx - http://www.leupold.com/resources/MyInfo81/Answerbook/findans wers.aspx

 

 



Posted By: Dasher
Date Posted: June/19/2006 at 06:28
Is there a similar device that also works with stainless steel barrels?


Posted By: dlgreen
Date Posted: January/08/2007 at 19:04
I just bought a Leupold Zero Point bore sighter.  On the rifle I first tried it on, it indicates that my cross-hairs need to go up a significant amount.  In fact, it shows that I need to go up more than my adjustment allows.  This rifle currently shoots about an inch low at 100 yards.  Thinking that I was not using it properly, I tried it on another rifle that I know is zeroed in.  On that rifle (and two others) the cross-hairs are perfectly on the grid.  The rifle / scope that I am having trouble with is a Winchester Model 70, low mounts and a 2-7x32 Burris scope.  Does anyone have any ideas?

-------------
Dave G


Posted By: Clark
Date Posted: March/27/2007 at 19:49
 
My bore Zero Point illuminated just arrived from SWFA.

Here it is with a 13X target dot on a rifle already sighted in

http://www.thehighroad.org/attachment.php?attachmentid=55554 &d=1175042452 - http://www.thehighroad.org/attachment.php?attachmentid=55554 &d=1175042452






Posted By: frank
Date Posted: July/18/2007 at 12:50
Hello:
Nice device - I just got one today. Question: What do the numbers below the zero mean? Are they inches ABOVE or
BELOW?
Thanks


Posted By: Boneyfreak
Date Posted: August/03/2007 at 18:31
shim it if your set up is way off to start. (in the rings)


Posted By: Boneyfreak
Date Posted: August/03/2007 at 18:50

Originally posted by Dasher Dasher wrote:

Is there a similar device that also works with stainless steel barrels?

 

Works fine with SS barrels.

SS barrels are alloyed, without carbon they would blow up in your face.

 

Works fine with my TC barrels.



Posted By: FC-NoVA
Date Posted: January/01/2008 at 14:12
I just received my Zero Point and have a question about using it to confirm zero without firing...

When I move the Zero Point vertically on the muzzle of my 700 PSS with a 10x42 mounted on a 20MOA base, I noticed that the grid is moved as well. Is this because of the canted base? If that is the case, then it is necessary for me to make sure the Zero Point is installed on the muzzle at the exact same vertical position each time in order for the grid to be in the same position, correct?

Also can someone explain what exactly does "The inch scale marked on the housing can be used to set the scope height" mean? How exactly do you use this scale on the Zero Point?

Francis


Posted By: Ed Connelly
Date Posted: March/03/2008 at 09:45
Originally posted by dlgreen dlgreen wrote:

I just bought a Leupold Zero Point bore sighter.  On the rifle I first tried it on, it indicates that my cross-hairs need to go up a significant amount.  In fact, it shows that I need to go up more than my adjustment allows.  This rifle currently shoots about an inch low at 100 yards.  Thinking that I was not using it properly, I tried it on another rifle that I know is zeroed in.  On that rifle (and two others) the cross-hairs are perfectly on the grid.  The rifle / scope that I am having trouble with is a Winchester Model 70, low mounts and a 2-7x32 Burris scope.  Does anyone have any ideas?
 
Take your rifle outdoors and go get a big cardboard box.....cut notches in the box with your jacknife..........set the rifle in the notches ( padded ) and pull out the bolt and look through the barrel at a bullseye painted on a target 25 yards away......Bucky.........look through the scope.........make adjustments..........get screwdriver.....throw hat on ground.......cuss in low tones so no one will hear you.......take a shot at target...........send your friend to the liquor store while you finish up............tighten up eveything real good...........took 25 minutes.........( I would still be asking someone to explain Leupold's booklet to me by this time....)   Wink
 
---Ed  Big%20Grin 


Posted By: 3_tens
Date Posted: March/03/2008 at 16:34

Trust the FORCE. It is strong.Star%20Wars After you mark your card you can change to another scope set it to your card, and it will be right on.  Trust



-------------
Folks ain't got a sense of humor no more. They don't laugh they just get sore.

Need to follow the rules. Just hard to determine which set of rules to follow
Now the rules have changed again.


Posted By: tahqua
Date Posted: March/07/2008 at 06:00
I have used the bore sighting method for years. It works and takes some time to set up.
The Leupold is small, portable and gets me just as close. It works better that the BSA I used recently. You can be set to go in under five minutes with the Leupy.


Posted By: Ed Connelly
Date Posted: March/09/2008 at 07:53
We can also go down to the local gun shop with an ace bandage on your wrist, and tell him your wrist hurts and you can't turn a screwdriver and would he bore sight this rifle please?  HA!  Wink                      


Posted By: mercenary1947
Date Posted: May/11/2008 at 13:13
 Seems like a step backwards ... grids and etc.  And looks like many have problems with it . I'll stick to my dual Laserlyte setup .

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One Shot One Kill .... *S.O.F * Head Shots Only
               SWFAM


Posted By: culpeper
Date Posted: August/04/2008 at 23:12
This gadget is actually pretty cool.  Think of it as looking into the mirror.  Everything is backward.  The height of the boresighter doesn't have to be exact.  Just measure from your barrel to the topic of the front part of the scope and divide by 2.  Use the ruler on the side of the boresighter to get the height about right.  Adjust the power x to get a good view of the lighted up board on the boresighter.   I boresighted to the hole in the light.  Shoot at target and you should get a shot on the target/paper.  Follow common sense safety and then put the boresighter back on, adjust the boresighter so the grids are square with the scope reticle crosshairs and look through your scope, the optical illusion of seeing through the boresighter, and adjust your crosshair to cover your bullet hole on the paper target.  Remember everything is backwards so you are actually adjusting to hit in the opposite direction.  Once you set the crosshairs on the bullet hole on the target make a note of your setting on the boresighter interface on one of the setting cards.  Now, take the boresighter off the muzzle and your next shot should be close to center of target.  If you do everything right and leave the science stuff out of your head the least amount of ammo you can use is two shot to zero under the right conditions.    You can use this boresight to measure your zero at any distance for quick on zero reference on your rifle.  So, the Leupold Zero Point is actually more than just a boresighter.  It is also a tool for standardizing your zero settings for variable ranges without firing a shot. 

At first I was puzzled but the boresighter doesn't have to be exact at the end of your muzzle. The optics of your scope does that for you.  This gadget costs about as much as two or three boxes of good ammo.  It will pay for itself in time with ammo saved on zeroing the rifle for different situations.




Posted By: culpeper
Date Posted: August/04/2008 at 23:14
Please excuse my spelling above.  Thanks.


Posted By: andbro
Date Posted: September/30/2008 at 09:11
Question on the Leupold Boresighter if anyone can help -- Mine has always worked great, but the last time I pulled it out, it's showing all of my scopes sighted 6" high (which they aren't).  Seems like it has gotten knocked out of whack.  Is there any way to adjust it?


Posted By: eugenef
Date Posted: November/06/2008 at 16:20
Hey guys I am new but have been buying most of my tactical gear from this site: competitor.com They seem to come up pretty often for most of the stuff I need. I had to return some stuff and no problem. Anyways I found the hhttp://www.competitor.net/leupold-zero-point-magnetic-illuminated-boresighter.html - Leupold Zero Point Magnetic Illuminated Boresighter pretty cheap right at OP. Just wanted to share the link! If I see anywhere cheaper will keep you updated but been checking a few sites and seems like they are the most reputable. Hope I helped someone out :)              


Posted By: eugenef
Date Posted: November/06/2008 at 16:36
hey guys i guess the link didnt work but anyways its competitor, just google it :)


Posted By: cyborg
Date Posted: November/07/2008 at 11:03
Eugene, We have rules here about posting competitors addresses and even listing their names. This is an open forum, it is however hosted by SWFA. As such we here are loyal to them for being so gracious. Now please read our rules before any continuance of posting here.
 

1.  Keep it clean.  If you have to ask your self whether or not it's clean.........don't post it.  This includes images too, no blood, guts, nudity, etc.  Only respectful "Hero Shots" of harvested game can be posted.  Pictures of bloody game, game hanging or game in the bed of pick-up truck are not respectable.

2.  No personal attacks.  If you think someone is an idiot, (chances are) everyone else does too.  No need to post it.

3.  Do not advertise our competition.  We work hard to gain the respect and support of our customers.  We also offer a 110% Low Price Guarantee.

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-------------
With Freedom comes great responsibility, you cannot have one without the other

An armed public are citizens. A disarmed public are subjects.

OATH KEEPER #8233 Support us, and join our cause.

Cyborg


Posted By: clivej
Date Posted: February/17/2009 at 14:40
Hi all first post here on OpticStalk.
Just need a bit of info on the Zero Point.  I brought one of these last week and need to know.
First I will zero the scopes cross hairs to be dead center, using a 'vee' block and pumb line.

With the bore sighter fitted to the muzzel and the scope in windage adjustable mounts, if I line up the scopes vertical windage reticle line with the zero points vertical line will my scope be exactly above dead center, parallel and true to the rifles bore?
Thanks.


Posted By: culpeper
Date Posted: February/17/2009 at 15:27
Mount the scope first for shooting.  Then use the instructions with the boresighter.  Your crosshairs should line up with the illuminated grid lines.  The only major thing to consider is the rule on the side of the boresighter and you crosshair height.  Don't worry so much if the boresighter is exactly centered.  Just eyeball the crosshairs and the gridlines for alignment.  The optics take care of that.  Then use your elevations and windage knobs to boresight the scope.  Your first shot at about 100 yards should be on paper.  Most times down and to the right on paper.


Posted By: onfinal
Date Posted: May/12/2009 at 20:03
I used my Leupold Zero Point Boresighter for the first time today and was unable to see the grid in daylight. I had aligned reticle with grid last night in my basement where I could control lighting, but when I went to the range this morning to recheck and sight in, the Zero Point's grid was very faint to non existent, and unuseable. It was a bright clear morning but I was facing away from the sun and had a darkish background (dirt bank).

I went ahead and fired that particular rifle 15 times and did well anyway, but really disappointed I couldn't get the Zero Point to work. Anybody have any clues how I could get more out of it? No one else in this thread seems to have had that problem and I'm wondering how you all did it.


Posted By: Oldtrader3
Date Posted: May/28/2009 at 10:59
One poster asked about stainless steel barrels and Zero Point.  Most stainless steel barrels are martensitic stainless (i.e. 416 stainless) with enough carbon steel content to retain magnetic properties despite being labelled as stainless steel.

-------------
CDR3


Posted By: hunterwingler
Date Posted: September/09/2009 at 10:42
i have one these damn things dont work worth a f***K. i must be doing something wrong, it does get you on paper & save some ammo. thats about it.

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I wasn't upset about the black cat crossing my path this morning but mouthing "your fu@#ed" as he passed was just rude.

If Guns kill people mine are all defective


Posted By: supertool73
Date Posted: September/09/2009 at 10:58
Isn't that the point of any boresighter, just to get you on paper.  

-------------
Lifetime warranty and excellent customer service don't mean a thing when your gun fails during a zombie attack.

"A Liberal is a person who will give away everything they don't own."


Posted By: tahqua
Date Posted: September/09/2009 at 11:22
Originally posted by supertool73 supertool73 wrote:

Isn't that the point of any boresighter, just to get you on paper.  
 
+1, that's exactly what they're for. To depend on them for anything more is a mistake.
BTW, this threads been around awhile.


Posted By: hunterwingler
Date Posted: September/09/2009 at 16:00
yeah i know it's been around a while, just came across it. yes but only gets yea with 6/8in  oh well who cares

-------------
I wasn't upset about the black cat crossing my path this morning but mouthing "your fu@#ed" as he passed was just rude.

If Guns kill people mine are all defective


Posted By: tahqua
Date Posted: September/09/2009 at 16:05
Originally posted by hunterwingler hunterwingler wrote:

yeah i know it's been around a while, just came across it. yes but only gets yea with 6/8in  oh well who cares


If that is @100yds, you are doing good.
Nothing wrong with bringing an old and relevant thread to the top, either.


Posted By: hunterwingler
Date Posted: September/10/2009 at 00:38
No it's about 50yrds but like said oh well still does the job for the most part.

-------------
I wasn't upset about the black cat crossing my path this morning but mouthing "your fu@#ed" as he passed was just rude.

If Guns kill people mine are all defective


Posted By: hitman_usmc
Date Posted: January/20/2010 at 15:55
I realize this is an old thread, but I didn't want to start a new one on the same topic. 
 
I just got the zero point to boresight my AR.  The problem is when everything is lined up, I can only see the bottom four squares of the grid.  I can't reach the grid with my scope even with the elevation cranked until it stops.  Any suggestions?


-------------
Fomer USMC
Current LEO


Posted By: eaglesharp10
Date Posted: March/04/2010 at 02:38
today only i got my leupold`s zero point boresight . i m facing one problem my grid pattern
is changing while moving the boresighter left and right with the
respect to the reticle of the scope (but moving vertically is having no effect ).
plz enlightened me of my problem.


Posted By: eaglesharp10
Date Posted: March/04/2010 at 02:47
today i bought my leupold`s zero point boresighter . i am facing one problem
thats the grid pattern of boresighter is changing when boresighter is moved in left and right position (no problem when moved up and down) plz enlightened me of this problem.


Posted By: 3_tens
Date Posted: August/26/2010 at 14:12
Things to note for the Leupold Zero point Magnetic Bore sight
 
The magnetic bore sighter will always need to be aligned vertically with the scope. The height only needs to be approximate because of the prism effect of the device. The scope sight in point will usually not be the center of the Grid. It usually is not the same between different rifles because of the difference in the crown on the barrels. It will be the same when used on the same rifle between different scopes. Use the supplied grid recording sheet or make your own to keep a record for all of your weapons for future reference. I have found this device to be accurate within 2"out to 300 yds when swapping scopes on a rifle if proper care is taken. When recording your actual zero point after initial sight in.  Then use the same diligence to realign  the new scope. After using the zero point a few times you will find the usual sweet spot that will be close for most rifles to get on the paper.


-------------
Folks ain't got a sense of humor no more. They don't laugh they just get sore.

Need to follow the rules. Just hard to determine which set of rules to follow
Now the rules have changed again.


Posted By: culpeper
Date Posted: June/17/2011 at 22:24
I've used this device for years.  It is fantastic for checking vertical zero any time you want to.  It is not good for setting horizontal zero unless you have a way to set the magnetic bore sighter absolute plum center on the muzzle.  I scanned one of the stickers that came with it and blew it up so it prints about page size.  This is what I mark my zero for various ranges.  Also, always use the same AO setting when using this device.


Posted By: Clark
Date Posted: December/04/2011 at 01:14
I made a 32 minute video today on modifying the Leupold Zero Point.

I have bought two of them and I am very impressed.

This is a  boring video [equations, milling, soldering], but it is about how I dealt with not liking the tiny batteries in the Zero point that jumped through the air to get to the magnet

 

 



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