"The longest-lived micrometer than can be bought." J.T. Slocomb micrometers and stand, all fully restored by myself. Each mic is between 70-120 years old, and they're all still accurate.GanderAtMyGoose t1_j91rfic wrote
What are the things stored at the bottom of the stand?
ExHempKnight OP t1_j91tim3 wrote
Those are micrometer standards. They are used to calibrate the mics, to ensure accurate readings. Each mic has a corresponding standard... The 3" standard calibrates the 3-4" mic, and so on (the 0-1" mic calibrates on 0, so it doesn't have/need a standard) The plastic sleeves on each rod are to insulate them from the heat of your hand, which can throw off the calibration.
GanderAtMyGoose t1_j91ubgv wrote
Ahh got it, makes sense!
TocsRetsek t1_j93xj7m wrote
They are used to standardize your mic. We use gage blocks to calibrate mic's. We use a labmaster to calibrate the the end rods as compared to the gage blocks.
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