Zeroing a mechanical digital micrometer

[Gordon Henderson 3Participant @gordonhenderson3]

Hi folks,

I purchased a micrometer which has a digital display operated (I assume) through some kind of gearing from the spindle. The micrometer can be read in the conventional way using the sleeve and thimble, and I have corrected the zero on these items. What I find I cannot do, is to zero the digital counter. I have instructions, but they are not very well translated from chinese, and are not much help. Currently, with the sleeve and thimble zeroed, the digital counter is reading 99.856mm.

I tried searching the internet but was not able to find anything to assist me, so if anyone can help, I'd be very grateful.

Thanks,

Gordon

[Gordon Henderson 3Participant @gordonhenderson3]

[mickParticipant @mick65121]

I assume you have used the zero button? When zeroing any micrometer the anvil faces must be completely clean. Place a thin piece of paper between the anvils and close them together using only ratchet pressure, then pull the paper out, the mic should read zero when closed with ratchet pressure, this is the point where you must zero a digital micrometer. If a digital mic is still not zeroing properly then try cleaning the contact face of the battery, or replacing it with a new one.

[Ady1Participant @ady1]

If you can upload a picture of it that would make things a lot easier

[Ian ParkinParticipant @ianparkin39383]

Gordon may be refering to the other type of digital micrometer ???

http://i417.photobucket.com/albums/pp251/ianpark1/DSC01150Medium.jpg

 

I should imagine that there would be a method of removing the counter mechanism and reseting the gear chain

 

Ian

Edited By Ian Parkin on 15/10/2012 10:46:31

[Gordon Henderson 3Participant @gordonhenderson3]

Thank you for the replys and, yes Ian, it is one of those you illustrated.

I have removed the small screw as suggested by Graham, but must be doing something wrong as I still cannot get the zero points to coincide. Fortunately, I have an engineer friend I can ask at some point in the near future.

Again, thank you all for your help.

Gordon

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