Profile gauge with convex profile
One of two profile gauges with convex profile which was used by the 3rd Earl of Rosse to measure the 72 inch mirrors used on the largest Rosse telescope.
Details
- Category:
- Astronomy
- Object Number:
- 1914-372/2
- Measurements:
-
overall: 90 x 1765 x 8 mm
- type:
- optical testing instruments and gauges (mirror)
- credit:
- Lord Rosse (5th Earl)
