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)
