Ramsden type dynameter micrometer
- patentee:
- Jesse Ramsden
Dynameter micrometer, Ramsden type, with mother-of-pearl line scales and eyepiece fitted with sliding cover, unsigned, English, 1785-1790.
Details
- Category:
- Optics
- Object Number:
- 1918-149
- Materials:
- brass (copper, zinc alloy), mother-of-pearl and glass
- Measurements:
-
overall: 30 mm 28 mm, .032kg
- type:
- dynameter
- credit:
- Court, Thomas Henry
