What are the Best Methods for Precise Vertical Movement Measurement?

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To accurately test a linear displacement sensor with a resolution of 10μm, using a micrometer or caliper gauge is recommended, as a drill press may not provide sufficient precision. Digital scales and read heads from companies like Renishaw, Heidenhain, and Mitutoyo can offer higher resolutions, some down to 0.1 micron. It's essential to ensure true measurement of displacement, with gage blocks being a reliable option. Understanding repeatability and conducting a repeatability and reproducibility (R&R) study will help determine the uncertainty of the measurement system. Accurate vertical movement measurement requires careful selection of tools and methods to ensure reliability.
Sam21
I want to test the accuracy a linear displacement sensor (Hall effect) that I have, but I'm not sure what to measure it against. The sensors are made to measure with a resolution of 10μm. My initial thought was to use a drill press to move up and down, but I don't think I know of any that are programmable/ can move precisely. I also thought of machining but I don't have machining tools on hand. Does anyone have any advice? Thanks
 
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Borrow a micrometer and put the sensor on the fixed anvil .

Ditto caliper gauge .
 
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drill press is not accurate enough. there are many digital scales and read heads available pretty cheap.
renishaw is one company, heidenhein is another. Mitutoyo has many as well.many resolve to 1/10 micron resolution. you still need true measurement of displacement and the gage block is reliable and trusted. once you read up on repeatabilty and can do a true R&R study you can know uncertainty of your " system" and its capability.
 
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