Micrometer types

[TomG]

I have a few unique ones as well.

This is the micrometer I bought when I went to college in 1972. It's a Swiss Etalon, tenth reading with carbide faces and has is rock solid frame. I still use it regularly. It's hard to see, but my name is hand engraved on the thimble. When I started college, my room mate knew of an old guy in Grand Rapids who did hand engraving and I took a bunch of stuff to him. He cut my full name in all of my mics, on the frame of my depth mic (hardened by the way) and even in each individual rod! He also did some lufkin indicators which looked cool because they were gray enamel on brass. I've always wanted to try my "hand" at engraving...




Here is a newer version of the same mic that I picked up on eBay. There are some really good buys on them there because most people have no idea how good they are.




This is Lufkin's version of the disc mic. It's not only very handy for measuring between slots, it also works well to measure soft materials like gasketing.




This little wonder is kind of the opposite of the disk mic. It measures the width of slots in a flat plate or inside a tube.





This is a Starrett Uni-Mic multi anvil micrometer. Instead of measuring the depth of a feature like a depth mic, it measures the height. It also measures the distance of a slot from an edge and with the round anvil, the distance of a hole or curved feature from an edge.





This is a Mitutoyo screw thread micrometer with replaceable anvils.





This is a Starrett depth mic with a thin non-rotating spindle. It's handy for measuring the depth of narrow slots or as a regular depth mic.




Here is a little mic that's super handy for getting into tight spaces.





Last but not least, this is a 6" set of NOS Lufkin micrometers that I've assembled over the years. All but two are the proper model. The green frames are slightly older.