This is a nice little 1" depth micrometer, along with two longer rods. I did not install the other rods, but have no reason to believe that they won't work. It has a ratchet attachment past the speed screw thimble, and is a trifle sticky, because someone probably used some oil that they shouldn't have, and it has set a bit.
This is a 3 piece set of Scherr Tumico micrometers..I pamphlet fromTumico ...the Starrett books were inside them..I don't know if Tumico made tools for Starrett... take a look at all my pics in magnify to see this sets condition... with this set you get one little wrench tool..
ER PRECISION COLLET CHUCK EXTENSION ER 11 - 1/2 Diameter - 8" Overall Length Smaller diameter lock nut than most brands make these ideal for machining hard-to-reach surfaces For use on CNC Mills Manufactured in USA from high grade, heat-treated alloy steel
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