Rangefinder

Material-Black painted brass frame, brass and alloy fittings, wooden handle.
Scales-1) Height scale on spring-loaded index arm, graduated 50-200 ft. 2) Range scale on micrometer drum, graduated from 200-10,000 yds.
Horizon glass- Perpendicular adjustment by square-headed screw on mirror mounting plate. Parallel adjustment by square-headed screw operating through side of frame.
Index glass -Perpendicular adjustment by square-headed screw on mirror mounting plate.
Micrometer drum-Fitted with hinged magnifier and attached to a carriage which moves alongside index arm by means of a worm screw, operated by a milled knob at front end of instrument.
Telescope-Length 2.5" (6.4cm) erected
In fitted mahogany box with brass carrying handles 12.6 x 6.7 x 6.4" (32 x 17.1 x 16.2cm), containing 2 spare springs, spare mirror and directions for use pasted inside lid.

Object Details

ID: ACO1265
Type: Rangefinder
Display location: Not on display
Creator: Schick Incorporated
Date made: 1942
Credit: National Maritime Museum, Greenwich, London, Admiralty Compass Observatory
Measurements: Overall: 105 mm x 280 mm x 140 mm