Resetting zero on a Mitutoyo dial caliper using the "special " tool.
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- เผยแพร่เมื่อ 28 ก.ย. 2024
- I have been meaning to do this video for sometime now having seen people use Mitutoyo calipers with the zero in some really odd places and nobody seems to show how to do it. Please excuse the dirty finger nails, I got them grubby specially for this occasion to give the impression that I actually do do some work now and then.
Its my late grandfather's equipment,he was an engineer.
Thank god now it will be beneficial to my studies.
Thanks
@@yashbhatia2444 thanks for the comment, glad it will help.
Dang! That's a great piece of info!! I'll have to check some of my cheap ones to see if they have that feature. I scrapped a unit a couple of years ago for it being off that far and I didn't want to deal with it being off that far. Thanks!!
thanks for commenting, only just found your post otherwise I would have replied earlier.
Elegantly simple Chris - nice! :-)
Why thank you kind Sir.
Thank you Chris for your video!, Very helpful. It is anoying to read the calipper with the neddle pointing to the wrong direction.
Fernando Angeles thanks for your comment, nice know my video is useful.
Hey Chris. Nice and easy fix, thanks for sharing it!
All the best
Jimmy
Thanks for that. So few folks know how it just goes show it is waste of paper including instructions as almost no one bothers to read them.🤦
ATB
C
Holy smokes, thank you so much for posting this. All the guys in my shop thank you too!!
Thanks for viewing and commenting, it still surprises me that this fix is not more well known but im glad it helps you and the guys.
Thats a neat little trick you've shown us. its such a pain on my other dials to reset it and then mess around trying to eliminate the backlash.
Hopefully I can do this with my new dial calipers that I've just ordered.
Thanks for viewing and commenting, This method is particular to a certain vintage Mitutoyo and may not be any use to other makes. I know what you mean about the backlash systems in other makes, truly a pain to reset once you get them apart. I shall not offer advice on other systems without close inspection and a lot of play.
If you find a simple way to fix other brands, post a video for otherscto learn.
I used the tool differently when a caliper jumped the track. Placing it on zero I would take the tool and insert it in the middle of the the rack under the dial and push it closed. worked every time. no damage was ever reported. (usually Mitutoyos)
Thanks for the comment, and yes any wsy that works is all that matters. As the youngsters say anything that floats ya boat 😊
@@chrisstephens6673 thanks
Tyvm was driving me nuts looking at an upside down dial.
thanks for the feedback, hope it helps.
I recently bought a 4-inch Mitutoyo dial caliper off eBay.
In the pictures it looked like the needle was misaligned by 0.001". When I got it it was misaligned by 0.005". My guess is it was jerked around along the route, and the seller failed to provide adequate padding.
While it did come with a thin copper metal piece that's made to be used in correcting the misalignment it's good to know that there's a much easier way of doing that.
Thank you!
Ernie Velveeta it seems there are different styles of caliper and this technique doesn't work on all types. I hope it works for you. Thanks for commenting.
Awesome. Such a simple method
Underrated video
Sorry for slow reply, i only just saw your comment and yt failed to notify me, which seems typical these days.
Thanks for commenting, i always try to thank commenters and i hope you didn't think me rude for apparently ignoring you.
Underrated, story of my life.😢
@@chrisstephens6673 My mitutoyo calipers, were different to yours (they are an old set given to me) and unfortunately didn't have a hole. I got it to work by poking material down the length of the slide (apparently some have a lift away pinion)
@@TomMakeHere from the comments it seems newer ones are different too, and they call it progress?😦
The drive pinion is held by a flat spring which is what you use the " tool" to lift. If you can access it somehow it sure better than pulling the hand off to reset zero.
Great advice & video Chris. Thanks for sharing
Regards
Mr f
Thanks for the nice comment, I'm flattered.
It worked a treat, thanks for sharing.
Peter Tyrrell Glad it was a help to you and thanks for letting me know. .
Good work on the video nice and short and clear. I tried to use the video to square my dial to the "sliding ruler" but when I expose the slot on the bottom, I push on it as hard as I feel comfortable doing, and I detect no movement inside. I'm scared that my particular version of caliper (mitutoyo 505-637-50 made in brazil might have had the insides altered so that this style of reset is no longer present. ive been down that road before, trying to pry open a dial indicator when it was never meant to be pryed open !!!! I'm surprised the thing did not snap in two....
Thanks forcthe comment. You only need to push perhaps half a millimetre to disengage the pinion. This does not work on all Mitutoyo calipers which seems like a bad design flaw on other models.
Removing the glass and the needle can work but it wont take long to wear out the fitting. Using watch makers tools to remove the needle will make things easier/safer but still a limited life situation.
@@chrisstephens6673 yea im scared to take the face apart :P is yours a 505-633-50? mine is 505-637-50 im trying to figure out how old it is......
Excellent! Do you narrate movies on occasion? You should
Thanks for commenting and you flatter me. Yes it has been suggested before, but not by anyone with any influence in the field.😭
That's so funny. I never thought about it till I read that comment, but absolutely Chris you would be excellent at that.
@@1ton4god you flatter me kind Sir, but i may have said it before but flattery no longer works on me,I'm too used to it.😉
@@chrisstephens6673 lol.... thats a great comeback.
@@1ton4god I refer the honourable gentleman to tje answer I gave a few moments ago.
The English will understand that reference. 🤣
Great video
Thank you very much, I try.😉
Brilliant! Thank you for sharing.
Thank you for commenting so nicely.
Thank you for this. I've had my Mitutoyo caliper for almost 40 years. I got it when I was studying and to become a machinist. Became a network engineer instead.
I have always used the 1st method re-zeroing the dial... I had no idea there was a better 'more correct' technique. Thank you.
Thanks for commenting and I'm glad you found it useful.
i got a 505-626 and they come with a different tool a thin feeler gauge type piece of metal you are supposed to put on the rack and slowly move the slider to the left and let the pinion come to rest over or ( force the pinion to roll over ) whatever works for you then move it until the reference edge lines up with a whole number then release the adjuster ( didn't work for me )
Thanks for viewing and commenting. On the whole that system sounds a little more hit or miss than the wire, but it wouldn't surprise me to hear that people push the wire too hard and over bend the internals, so they changed the method.
Thank you!
And thank you for your comment.
Thanks, this was really helpful.
Thanks for the comment and glad to pass on a little useful info, I'm really surprised that so few knew about it.
I knew about how to reset it, I have the same model. But, what is the tool called for resetting it? I can't find one, and I'd rather not go sticking a nail, screwdriver, or anything in it that's going to damage the rack. Thanks
Now you have me there, I just call it a special tool but it is only a bit of bent wire. The wire is something like 0.6 to 0.8mm, although as long as it fits the slot you should be fine, just push it enough to disengage the rack, you can judge that be the depth of the teeth of the rack, no great force is needed. I could imagine that if you bought one from mitutoyo the price would be significant, so literally a paperclip is the probably an option.
Just what I needed! Thanks
Glad to help and thanks for the comment.
Tks so much!!!
Thanks for commenting and thanks for the thanks, it is nice to know I am useful.
Apparently on my model the release is on the back (top) side of the dial.
Thanks for watching and commenting. It seems there are several types, but let's hope they can all be reset as so many accidents can unfortunately happen.
Great stuff.
Thank you kindly for your comment and excellent judgement.
Apparently not all mitutoyo dial calipers have that hidden slot . I have a Made in Japan , 300 mm version.
The only markings are "No. 505-635" on the dial face and "T44666-1" etched on one jaw on reverse side.
It began skipping an incremental 0.5mm eery time moved past a certain point about 150mm open. (ie , 20 open / close cycles past that point WOULD HAVE brought indicator back to 12o'clock ) but I decided to clean the gear track WITHOUT first manipulating to 12. ¯\_ (ツ)_/¯ . No good.
I could see any debris on the gear track but cleaner, brushing and ultrasound session eliminated the incremental skip, but now its stuck with 0.5 dial offset.
Can not even get hits on the model number on Mitutoyos' site.
NOTE - while in the ultrasoundic bath, I DID have the calipers open fully , ie only immersed the track section in the bath, NOT the clockworks.
Dried it before closing. So it you want partially good advice, thats it !
Looks like a couple gear track retaining screws also missing , and so the search goes on ...
Thanks for the comment, indeed the feature has apparently been dropped, which unfortunate. Sorry to hear your's doesn't have this feature.
I know they can be pulled apart but it seems like you need three hands to put them together again. The other alternative is to remove the crystal, then the hand and put it back it the right place. There is a but to this though, some types have an anti backlash feature and if this loses registration, as happens when dropped, you will have an unreliable zero.
Nice tip 👍🏻🙂 Tanks
Thanks for the comment, glad you liked it.
im more afraid to try this than to clean the sensor on my DSLR camera. Thanks for the info!
No need to concerned, just don't push any more than you need to. Hope it helps.
Thanks bro
You are most welcome and thanks your comment.
Top thanks.
You're welcome, thanks for the comment.
I took apart my caliper. Spent about 2 hours putting it back together. Maybe it should be in the instruction manual. Thanks
Thanks for commenting.
It was because of the lack of knowledge that i posted this video. I had the bit of wire in its little plastic bag but had no idea what it was for. I got fed up having to keep taking the glass off to pull the needle off then the penny dropped and i figured it out. Later confirmed by seeing instructions, possibly on the website.
@@chrisstephens6673 mine didn't come with the little wire. Guess I can use a .100 gage pin with a pair of pliers then!
@@nanobot81 from memory the wire is about 0.040" or 1mm, you can judge the length and square ftom the video comparing it to the dial size. Probably best to smooth the end that goes into the mechanism to be on thecsafe side. Good luck and let me know if it works for you.
Сколько он у вас уже лет
Sorry I missed your comment, years and years is the answer.
My man… you need to spend a little time on those nasty fingernails
Note taken, will try harder next time. By the way you are not related to an old girlfriend of mine, are you?😂
To be fair the whole thing way done on the fly, while working on something and hopefully the info got through despite the manicurial faux pas.
Thanks for commenting.
Saved me buying a new calliper thanks mate!
Glad to hear that, thanks for your comment.
Incredibly simple and perfect instructions
"Perfect" you flatter me but i should warn you flattery doesnt work on me, I'm used to it.😉
Thanks for viewing and commenting, I clearly achieved my aim in the video.
Hello Chris, Excellent tip there my friend, thanks for sharing! Cheers!
You are clearly a man of good taste, and it was about time someone showed how to do it for all us battery free measurers.👍
Omg wash your grubby mitts man
Be assured I have many times since I recorded this, but at least it shows I am a doer and not an armchair machinist. 😉
Nice hint Chris. Did not know about that.
Hi Randy, there are variations not all work this way, but if this style it sure beats pulling the needle off to re zero, been there, done that!😒
What a great video,, didn't need to go through a bunch of bs,, straight to the point and well done,, great video..
Thanks for the generous compliment, i never learned to edit so my videos are straight from the camera and where i live it takes forever to upload so must be short.
I am bad at reading the papers that come with machining tools (Calipers, Mics), and wondered what the little brass rod/pin was for. It worked great. The slot on my 12 inch Mitutoyo Calipers is at the top of the Dial. I got tired of reading it with Zero 180 degrees off position.👍
Thanks for the feedback, a short video can save a lot of paperwork!
Thanks. Mine was getting further and further out over the last year! I've just been putting up with it and thinking, "I'll have to sort that at some point."
You are welcome and thanks for a comment. They do jump rather easily, unfortunately, but now you know the fix all will be well again.
Thanks. I've been trying to figure it out on a Japanese made Draper
@@michaelhuang2477 no guarantee that other makes have the same system, if it works great but there are other more complicated ways for other types that need resetting.
Just a heads up…not all Mitutoyo callipers have this facility…some you can lift /prise off
the bezel and glass, carefully remove the pointer, replace in the desired position and replace bezel and glass
Thanks for that but I did know. Some other makes that is the way to do it too but not a good way if in the slightest bit ham fisted. The "special tool" method is best and it is a little disappointing that they seem to have dropped it on some models.
Dang I just disassembled mine took the crystal and bezel off then removed the reading hand. Your way would have been so much easier
Thanks for commenting, it may be annoying right now but I'm pretty sure it will be useful next time if you are anything like me.😭
Dropped mine caliper, as a result I had the 0 at “one o’clock”. I checked the gauge and it was still accurate, so no harm there. Even though everything worked as expected, I found having the 0 offset to the right drove me nuts. Now I can fix it.
Thanks for posting this video!
Glad it helped and you are not the only one to drop their calipers.😭
Thanks for commenting, it makes the whole thing worthwhile.
🎩’s Off To the Magician 😊 Thanks You.. I’m looking for a Sewing needle or Safety clip Right Now! .. Cause I gots to get me back to Zero ! if it works your gonna be my Hero 🙌🏽
Thanks forcthe comment, which youtube actually informed me about for a change.
I hope it works for you, i am amazed that it isn't more well known, but im willing to be your hero whatever.😉 I can't remember if i stressed the point but don't push too hard or you might bend the spring that keeps the gears engaged making it more likely to jump.
Edit maybe a paperclip for the wire
I have the exact same problem! I have a brother who's a machinist, but I keep forgetting to ask him. I'll give it a try. Thanks very much for posting!
Thanks for watching and commenting. I hope yours is one where this procedure works.
Theres also a preload adjustment you need to do if it’s not going back dead center each time closed there’s videos on doing it here. Great tip thou thanks
Thanks for watching and commenting. I suppose I could have mentioned other things like gib adjusting screws and how they can cause variable readings but I tried to show how to quickly fix a very common fault.
Could you use a straghtened out paper clip to do this?
Provided it fits the hole why not, a bit of wire is just a bit of wire? On thinking about it maybe cut the clip so you can have better feel, you don't want to push too hard for risk of permanently bending the spring inside.
Thanks for the question
@@chrisstephens6673 Ok great. And thanks so much for making this video.
@@AndrewSmith-qj5zv thanks to you, a gracious comment makes the whole thing worthwhile.
Ahah! Thank you!
Luke Shellhorn you are welcome. thanks for commenting .
Does this work on other brands of calipers
Now there you havr me, from looking st other makes i have I doubt it which is a pity as assembling the anti backlash arrangements can be a pain. Having said that, no harm in looking for some similar function.