One of two profile gauges with convex profile whic

Made:
1844-1845
maker:
William Parsons

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
Materials:
complete, iron, pine
type:
optical testing instruments
credit:
Lord Rosse (5th Earl)
status:
Permanent collection

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