Smallest Gage block - What is the smallest gage block for calibrating micrometers?

L

lebronfeldt

#1
What is the smallest gage block for calibrating micrometers?

I have a 0.010 block but would like something smaller.
 
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#2
Re: Smallest Gage block

What is the smallest gage block for calibrating micrometers?

I have a 0.010 block but would like something smaller.
You can go to smaller gage pins (Deltronic) or gage balls. You may want to use gage balls as an approach to detect wear on micrometer anvil faces.
 
L

lebronfeldt

#4
Re: Smallest Gage block

to make a 2.00 reading is actually 2.00 on the display.

I've tried feeler gages but they keep giving different readings.
 
#8
Re: Smallest Gage block - What is the smallest gage block for calibrating micrometers

Hello everyone
If you used a 2.000mm block and a 2.001mm block you could get a 0.001mm difference. This should be visible on an electronic micrometer.
Hope this helps.
Paul
 
K

kgriff

#9
Re: Smallest Gage block - What is the smallest gage block for calibrating micrometers

What is the nominal thickness of the paper?

You might try something like this. Using an example of a nominal paper thickness of 0.12mm, with a tolerance of +/- 0.010mm
-Purchase a 10mm Class Y plug gage. Purchased as a "master", this will have specification of +/-0.000445mm.
-Use the plug gage, in conjunction with the micrometer, to measure the paper. (In other words, for every measurement, you will be measuring the plug and the paper at the same time. This makes the nominal measurement 10.12mm +/- 0.010mm)

This method gets you within a range where you do not require any special sized gage blocks to calibrate your mic. At my company, we have and use many odd-sized gage blocks. There are available from most any gage block manufacturer. However, they are expensive to purchase, and expensive to have them calibrated. You are better off to sitck with normal sized gage blocks, where possible.
 

Jen Kirley

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#10
Re: Smallest Gage block - What is the smallest gage block for calibrating micrometers

Since a gage is said to most accurately measure in approximately the center of its range and its resolution should be about 10 times that of the tolerance increment, I would not choose a micrometer for this task. So, as Stijloor suggests I would start with an instrument that has an appropriate range and resolution. I would get this gage externally calibrated before trying in-house calibration to .001mm.
 
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