Pocket chronometer movement by Robert Twyford, 1860-1920
Details
- Category:
- Time Measurement
- Object Number:
- 1975-171
- Materials:
- enamel, steel (metal) and brass (copper, zinc alloy)
- Measurements:
-
overall: 15 mm 48 mm, .065kg
- type:
- movement - clockwork
- credit:
- Hubbard, L.