A Metal Square from Case for Reflecting Circle, Early 19th Century

Item type: Object
Makers: RAS
Primary inscriptions: "RAS S No 20" painted on front. "S.20. 11in. Refl 9" Circle. 46." printed on paper label on front.
Physical material: metal
Object type: Telescope
Dimensions: Height: 47mm Width: 25mm Depth: 3mm Weight: 9g
Inventory No: 77862

Description

A metal square with a smaller protruding square on one side and a triangular hole next to it.