Mitutoyo digital micrometer

[Colin HarwoodParticipant @balljoint]

[Colin HarwoodParticipant @balljoint]

Hi

 

I have just purchased a second hand Mitutoyo 293-344 digital micrometer which has no manual. Could anyone tell what the buttons origin and zero/abs do, or how to use them

 

Thanks

 

Colin

[Brian in OZParticipant @brianinoz24148]

Hello Colin,

When in doubt “Google” for information

http://www.mitutoyo.com/pdf/4C-9_IP65.pdf

is a link to a pdf file on the exact micrometer you have with all the tech details and pretty pictures.

 

[The Merry MillerParticipant @themerrymiller]

This might help Colin.

 

http://www.ehow.com/how_7532704_use-mitutoyo-digital-micrometer.html

 

Len. P.

 

[Colin HarwoodParticipant @balljoint]

Thanks for the replies Guys, I think I now understand a bit more, although there are still a couple of points I’m not clear on.

 

Hopefully with experimentation all will be revealed

[Sub MandrelParticipant @submandrel]

Typically zero does exactly what it says – sets the micrometer’s reference zero to whatever position it is at – so close up the micrometer until it is closed, with the same force/technique you would use on a workpiece, and press zero. It is now set.

 

abs/zero usually switches between displaying the ‘absolute difference’ between where the micrometer is and the set zero point, and displaying a ‘relative distance’ from a temporary zero when you press the button. This saves you resetting the main zero point if what you want to measure is the difference between two sizes.

 

This latter is very useful if you are turning a shaft to a size – set the micrometer to read the size you want, switch to relative zero mode, and it will read the difference between the size of your bar and the target size. When it reads zero, switch back to absolute mode to check it has worked.

 

There are quirky differences between different types so practice a bit until you are 100% confident it does what you expect.

 

Neil

[Colin HarwoodParticipant @balljoint]

Hi Neil

 

Thanks for the explanation, I had managed to work most of that out, the bit that is still unclear is when you press the zero button, the display sets to zero and a flashing p is also displayed but the thimble has no effect until you press the zero button a second time, when the p dissapears and the display then becomes active. Any ideas on the thinking behind this operation

 

Regards

 

Colin

[Sub MandrelParticipant @submandrel]

Hi Colin,

 

That’s a new one on me, I’m afraid.

 

Neil

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