Pocket compass

Bowl-Dia. 1.4" (3.6cm) Steel watch type case. Fitted with needle locking mechanism operated by closing lid of case.
Card-Dia. 1.1" (2.8cm) White paper card with black markings. Graduated to 16 points and quadrantally in degrees.
Needle-Length 1" (2.6cm) Edge bar needle with jewelled pivot cap at centre.
O.A. Height 0.5" (1.3cm)

Object Details

ID: NAV0457
Type: Pocket compass
Display location: Not on display
Creator: Troughton & Simms
Date made: circa 1850
Credit: National Maritime Museum, Greenwich, London
Measurements: Overall: 12 mm x 36 mm x 47 mm