Metrology Glossary – 123

At J.A. King, we strive to educate our team and our customers so we can all make informed decisions and improve quality. Having information at our fingertips is the best way to do that. We have compiled a list of the most common terminology within the precision measurement industry, backed by our experts with years within our industry.

Precision Measurement Glossary of Terms

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123 Block

A tool used in machining fields, especially milling, to aid in setup. It is a block of steel that is precisely squared and parallel whose sides are 1, 2, and 3 inches long, respectively

60Hz Rejection

The insensitivity of an amplifier to an interfering signal usually expressed in dB. Twenty dB means 10 times, 40 dB means 100 times, 60 dB means 1000 times, etc. The 60Hz rejection specification means that an interfering 60Hz signal 100 times higher (40dB) than the full-scale sensitivity of .1 volt will not cause an error.


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