Pocket telescope objective lens cap

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ID:	NAV1696.1
Type:	Pocket telescope objective lens cap
Display location:	Not on display
Creator:	Unknown
Date made:	circa 1850
Credit:	National Maritime Museum, Greenwich, London
Measurements:	Diameter: 42 mm;Overall: 15 mm
Parts:	Pocket telescope Pocket telescope objective lens cap (NAV1696.1) Pocket telescope eyepiece cap (NAV1696.2) Pocket telescope base of case (NAV1696.3) Pocket telescope lid of case (NAV1696.4)