early metric micrometer
- Made:
- 1878 in Providence county
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Science Museum Group
© The Board of Trustees of the Science Museum
First type of one inch size micrometer caliper made by Brown and Sharpe in 1878. This one reading metric sizes, 0 to 25 mm. with graduated scale to read to 0.02 mm.
Details
- Category:
- Industrial Metrology
- Object Number:
- 1928-1122
- Materials:
- steel (metal)
- Measurements:
-
3.5 x 1 x 11 cm
- type:
- calliper micrometer
- credit:
- Brown and Sharpe Manufacturing Company
