4 ms·
Calibration only verifies the stated accuracy at some conditions. I'm pretty sure Mitutoyo verifies the design and performance across specified temperature and
by fest 6y ago
Calibration only verifies the stated accuracy at some conditions. I'm pretty sure Mitutoyo verifies the design and performance across specified temperature and humidity range, which I'm pretty sure the fakes skip.
Tiny differences in the design of precision devices can void the accuracy of measurements (for example, using a resistor of the same value, but with larger temperature coefficient can make the device pass accuracy test at room temperature but fail at slightly lower temperature).
- progre 6y agoAll good points and I agree, but technically both the work piece and the measuring equipment needs to be settled in a controlled environment for the measurement to repeatable. I know this is not typically how calipers are used in practice though.
- fest 6y agoBut even then, component aging and drift is something that is considered by serious manufacturers- Mitutoyo can probably guarantee and back it up with tests, that their design will maintain the accuracy over some time frame. Of course it doesn't matter for most machine shop uses of calipers- but when it does, there is definitely more to it than meeting stated accuracy once.
- progre 6y agoSure, I'm not arguing for using fakes here. Mitutoyo is very respected for a good reason. I have never had one piece of Mitutoyo gear go flaky on me once. A coworker almost made us miss a flight because he refused to hand his Mitutoyo calipers over to security at the check. I'm saying that even if it's a Mitutoyo it has to be calibrated every year.