Range Finder, by Weldon, English, 19th Century

Item type: Object
Makers: Weldon
Provenance: Not ascertained.
Primary inscriptions: "Weldon Range finder Patent" and on other side of case "90° 1st" and 88° 51' 15" 2nd"; and on sight "3rd".
Physical material: Brass and glass
Dimensions: Diameter: 45mm
Inventory No: 53382

Description

Swivelling brass housing containing psrism system and projecting fixed sight containing another prism.