Calibrating A Precision Level - Addendum
HTML-код
- Опубликовано: 14 дек 2024
- This video is further clarification on how I found a level surface to calibrate the precision level.
#backtobasics
#machineshopbasics
#machineshopbasicskills
sharkrivermachine@gmail.com
You can also use a 123 block and a machinist jack to make a test stand. Put one end of the level on the block and raise and lower the other end with the jack until it reads the same when you swap ends.
There are many ways to do most procedures. I try to show ways that do not require any special tools. Thank you for watching and commenting.
I’ve read the checking surface does not need to be close to level, it only needs to be repeatable when the level is rotated 180 degrees when placed in the same spot. Levels are self checking which is a beautiful thing.
That is correct, but the closer it is the easier it is to calibrate when swapping end for end. Thanks for watching and commenting.
Here's what I experienced: the bubble was off so I swapped end to end and the bubble was off by same amount, it followed the "uphill" side of level just like you showed. However, after I then adjusted the nuts so the bubble was centered, I checked it by swapping it end to end again and it was way off! Why?
I the bubble was off and equal amount when reversing the direction than it was correctly calibrated at that point.
@@sharkrivermachine What I found was small adjustments were needed to both the level nuts and then reconfirming the symmetry swapping ends. I was making too big steps.
Ahhh! I get both videos now! Great info.....
Sometimes too much information is left on the editing room floor. Thanks for watching and commenting.
I am really confused about how to calibrate spirit level. I own 6 quantum with precision of 0,02mm/m. When I put those level on a flat surface (I use a glass with 10mm thick) in one position the bulb is on the left and when is rotated of 180 ° the bulb is in the same position, left side. What does it means? In theory we need to have the vias, paralel whit the foot ot the level, right? If so, if i adjust a little to center the bulb, when rotate the bulb is not centered but go to one of the side. The adjut system is very tricky and put me nervous. Could someone help me to understand how to proceed? Thanks in advance
In the first half of your question it appears to me that your level is calibrated correctly. So without making any other change to the calibration just rotate the level on the surface until the bubble is centered. Mark that position and rotate the level 180 degrees, the bubble should still be centered, if you have calibrated it correctly. Thank you for watching and commenting.
Nice job Steve, I guess I missed part 1. Lots of different ways one can do this but I have even took a known flat plat on any old table ( making sure table is solid ) and use note pad paper to shim plate to level. That's one thing about a level, if the bubble centers when you turn it 180 its level. Thanks for sharing. Off to check out part 1. Gary
Thanks for watching and commenting.
Looks like a Atlas from Kalamazoo in the back ground, good job on the video, Wait to see more videos you have, maybe on a DRO and usage, set up and using the SDM. Thanks so much Steve
Thanks for watching and commenting.
Great video Steve. Got two levels to check/calibrate.
Hope that these 2 videos are helpful. Thanks for watching and commenting.
Sir, Can be explain term "Level Spot" used by you at 1:30 min of your video ?
On any surface that is reasonably level there is an orientation that is perfectly lever if you rotate the precision level on that surface. Once you find that spot you can mark it, then swap you level end for end and returning it to that same spot to further calibrate it. I use a 1-2-3 block or similar to mark the spot so that I can return the precision level to the same spot each time. As long as the bubble is in the same spot when swapped end for end the precision level is calibrated. Hope that helps.
this help me out a lot sir thank you
You are most welcome, thank you for watching.
Thank you for your video. I have a question. I just bought a new precision level and I can't seem to calibrate it. I am on a flat surface checked with 3 other high quality levels. When I get the bubble to the centre of the level then rotate it 180 to check it the bubble goes all the way to the side. What am I doing wrong?
It sounds like the surface is not a level as you think it is. That is not a problem. With the bubble in the extreme location start to rotate the new precision level on the surface until it stats to move. Mark that location by laying heavy straight edge along side it. Then rotate the level 180 again and check to see where the bubble is. Keep doing this procedure until the bubble is in the center or has the exact same offset each time you rotate it 180. Hope that this is helpful.
Thanks
You are lucky you got a question that was sort of easy to answer. Usually I get questions on a video that is two or three years old and I have no real idea what the heck it was about much less the answer to the question. Then I have to go back and watch the video to hopefully figure it out. 🤔
I have had some of them myself. I knew that I had a problem when the video was first published the video. I was too vague about this procedure.
You want the bubble vial to be parallel with
the bottom of the level correct?
I’m thinking Inwould use an indicator and
check each end for any difference.
The level is self proving by swapping end for end. Make sure to check the original video on calibrating the level. This video is just some additional information explaining that it does not have to be done on a precision granite surface plate. Thanks for watching and commenting.
What if you don't have a "known level" surface, but have a flat surface. Can you make the level the same line off-center when you flip it on either side? Example 1 line to the left then rotate the level and have it in the new 1 line on the left? That is if 1 line to the left is the same spot when you turn the level around.
That is what I was trying to show in this video. As long as the offset of the bubble is the same in both directions you have a calibrated level. Thanks for watching and commenting.
@@sharkrivermachine Happy Face Emoji. Now to start cleaning up and repainting that rusty Stanley No 36 Level. Hopefully, I can make it accurate again as well.
So, use a 4" torpedo level with a .250 accuracy to verify a macinist level with a .005 accuracy 😂 keep to wood working dad!
Hardly. don't know how you came up with that idea. The point is that you do not need a precision level surface to calibrate a precision level.
COPY MACH. PLATE GLASS , W PAPER SHIMS .
Thanks for watching and commenting.