A couple of years ago we published a look at precision measurement tools, in particular vernier calipers and micrometer screw gauges. It featured a look at how they work and how they’re used ...

This analog micrometer has scale graduations in increments of 0.0001 inch (2.54 microns). It features a ball tip on the anvil ...

As one does I found myself browsing, one thing led to another, and I bought a micrometer screw gauge. While micrometers are pretty expensive devices, reflecting their high precision engineering ...