Mitutoyo Dial Caliper Question
I recently purchased a fairly clean pair off Ebay for $22.50 (#505-626 6″). I would like to have them re-calibrated and cleaned up a bit (they don’t slide as smoothly as they should).
Can any of you suggest a place the that would perform such a task?
Thanks, Brad 
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Yep
leave them open a wee bit, thats what I was taught, ya got some good stuff there FWB.
SAW
I wouldn’t worry about calibrating it unless you have a reason to suspect it. They will be close enough for anything you are doing unless you are building parts for high precision fits. Like the sawman says, spin the dial. I usually do that at zero, with the jaws fully closed. Beware a drill bit shank is usually a tad smaller than the nominal size.
Clean the jaws well, usually by pinching closed on a sheet of paper and pulling the paper out several times. Check for a burr on the tip, if there, carefully whetstone it with a really fine stone.
For the slide stickiness, try wiping the bar down with WD40 and sliding it back and forth a few times. Then wipe off the excess and lube it with teflon grease. Also, there is an adjustment (2 setscrews against a tension bar from above) to keep it snug. If that’s too tight, loosen it.
The thumbscrew on top is to lock it. Loosen it a bit and it might slide easier.
The best thing you can do is open it up all the way and pick any pieces of metal or other shit out of the tiny teeth in the track. They will cause your needle to jump a tooth, which can be corrected with a thick box staple and some time and effort.
Those are some nice calipers, and you never have to worry about the battery going dead in your tool box! Take good care of them and they will serve you well. When you store them, leave them open about 30 thou. If you have any crap trapped between the jaws, it may corrode before you use them next.
Good find. I don’t think they make the 0.2″ dial any more.
It never dawned on me to simply contact Mitutoyo directly (duh!). I’ll give it shot come Monday.
Thanks Saw. 
FWBGBS-
no idea, however contact the manufacturer, bet they will
Can’t ya just mic a drill bit and spin the dial ?
If she doesn’t slide, make sure it’s not bent, next I would clean and lube.
SAW
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Well, I got my reply from Amosh Kumar at Mitutoyo just now. He claims they’ll re-calibrate and clean them up for FREE (you can’t beat that deal). I’m shipping them off to Elk Grove Village, IL tomorrow.
Thanks you two for the help and knowledge you bestowed upon me. I’m on the exact opposite end of the machinist/engineer spectrum. I just figured it would be nice to have a set around in case I need to give accurate dimensions when requesting Talon specialty pieces from the mavens on this board. I’ve read there is the occasional variance in certain part sizes.
Thanks again, Brad
