Small clockmaker's screw micrometer, made by Mr. Gustav Horstmann, 1856, mounted on mahogany base, range 0 to 1";designed to be accurate to 0.0001".Made for measuring clock and watch pivot points.
Details
- Category:
- Industrial Metrology
- Object Number:
- 1938-312
- Materials:
- mahogany (wood)
- Measurements:
-
: 2.16535 x 3.93701 x 1.88976 in.; cm
- type:
- micrometer
- credit:
- Horstmann Gear Company Ltd.