Station pointer extension arm screw

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Station pointer extension arm screw.

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ID:	ZBA0639.5
Type:	Station pointer extension arm screw
Display location:	Not on display
Creator:	Unknown
Date made:	Unknown
Credit:	National Maritime Museum, Greenwich, London
Measurements:	Diameter: 16 mm;Overall: 19 mm
Parts:	Cary Porter Azimuth Instrument (Station pointer) Station pointer extension arm (ZBA0639.1) Station pointer extension arm (ZBA0639.2) Station pointer extension arm (ZBA0639.3) Station pointer extension arm screw (ZBA0639.4) Station pointer extension arm screw (ZBA0639.5) Station pointer extension arm screw (ZBA0639.6) Station pointer magnifier (ZBA0639.7) Station pointer box (ZBA0639.8) Station pointer magnifier (ZBA0639.9)