Kroeplin Micrometer
Very sweet little device. Apart from the micrometer and a slip of paper certifying its calibration, there are 2 pieces of steel. One with the numbers 3 and 5 on it and the other blank. There's nothing else in the box. I can tell you that the larger piece is 2 mm thick and the smaller is 1.5 mm thick, but I've no idea how these are useful to me.
What are these two pieces for?
Many thanks.
MrAnybody's Locks
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