Precision aneroid barometer Type M1991

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Allen key for the Precision aneroid barometer Type M1991

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ID:	NAV0764.4
Type:	Allen key
Display location:	Not on display
Creator:	Unknown
Date made:	Unknown
Credit:	National Maritime Museum, Greenwich, London
Measurements:	Overall: 1 mm x 43 mm x 12 mm
Parts:	Precision aneroid barometer Type M1991 (Barometer) Precision aneroid barometer Type M1991 (Batteries) (NAV0764.1) Precision aneroid barometer Type M1991 (Miscellaneous part) (NAV0764.2) Precision aneroid barometer Type M1991 (Miscellaneous part) (NAV0764.3) Precision aneroid barometer Type M1991 (Allen key) (NAV0764.4) Precision aneroid barometer Type M1991 (Instructions) (NAV0764.5) Precision aneroid barometer Type M1991 (Instructions sleeve) (NAV0764.6)