Rangefinder

A set of four hand-held instruments for station keeping. Each instrument consists of a prism in a wooden mount 4.3" (10.9cm) long, shaped for ease of handling. the prism is held in place by a brass screw and washer. Secured to the lower part of the mount is a length of black cord. Marked as follows:
1. M NAV 10/150
2. M NAV 10/200
3. M NAV 10/200
4. M NAV 10/200
Contained in leather case.

Object Details

ID: NAV1090
Type: Rangefinder
Display location: Not on display
Creator: Steger, Jr
Date made: circa 1940
Credit: National Maritime Museum, Greenwich, London
Measurements: Overall: 20 mm x 155 mm x 125 mm