Theodolite eyepiece

Eyepiece for the "A" frame telescopic theodolite. Has a red shade.

ID:	NAV1462.5
Type:	Theodolite eyepiece
Display location:	Not on display
Creator:	Worthington & Allan
Date made:	circa 1830
Credit:	National Maritime Museum, Greenwich, London. Caird Fund.
Measurements:	Diameter: 24 mm;Overall: 34 mm
Parts:	Theodolite Theodolite (NAV1462.1) Theodolite telescope (NAV1462.2) Theodolite telescope lense cap (NAV1462.3) Theodolite eyepiece (NAV1462.4) Theodolite eyepiece (NAV1462.5) Theodolite horn magnifier (NAV1462.6) Theodolite box. (NAV1462.7)