Apparatus part for testing Ostler's anemometer

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Hook, part of the apparatus for testing Ostler's anmometer.

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ID:	AST0783.4
Type:	Hook
Display location:	Not on display
Creator:	Unknown
Date made:	Unknown
Credit:	National Maritime Museum, Greenwich, London
Measurements:	Overall: 19 mm x 20 mm x 27 mm
Parts:	Astronomical instrument Apparatus part for testing Ostler's anemometer (AST0783.1) Apparatus part for testing Ostler's anemometer (Pulley and mount) (AST0783.2) Apparatus part for testing Ostler's anemometer (Hook) (AST0783.3) Apparatus part for testing Ostler's anemometer (Hook) (AST0783.4)