Apparatus part for testing Ostler's anemometer

Apparatus for testing Ostler's anemometer with attached wire.

Object Details

ID: AST0783.1
Type: Apparatus part for testing Ostler's anemometer
Display location: Not on display
Creator: Unknown
Date made: Unknown
Credit: National Maritime Museum, Greenwich, London
Measurements: Diameter: 72 mm;Overall: 525 mm
Parts: Astronomical instrument