Cog | Royal Museums Greenwich

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Cog

Part of Transit Circle roof mechanism.

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Object Details

ID:	AST0991.18
Type:	Cog
Display location:	Not on display
Creator:	Troughton & Simms; Ransomes & May
Date made:	1851
Credit:	National Maritime Museum, Greenwich, London
Measurements:	Diameter: 208 mm
Parts:	Airy's transit circle (Telescope) Rod (AST0991.1) Rod (AST0991.2) Finder Telescope (AST0991.3) Metal bar, with grooves (AST0991.4) Metal bar, with grooves (AST0991.5) Metal bar, with grooves (AST0991.6) Metal bar, with grooves (AST0991.7) Metal plate (AST0991.8) Metal plate (AST0991.9) Cog (AST0991.10) Cog (AST0991.11) Cog (AST0991.12) Cog (AST0991.13) Cog (AST0991.14) Cog (AST0991.15) Cog (AST0991.16) Cog (AST0991.17) Cog (AST0991.18) Stairs (AST0991.19) Collimating tubes housing for ATC (AST0991.20) Collimator support (AST0991.21) Collimator support (AST0991.22) Collimator support (AST0991.23) Collimator support (AST0991.24) Collimator support (AST0991.25) Collimator support (AST0991.26) Relay for recorder (AST0991.27) Relay for recorder (AST0991.28) Cable (AST0991.29) Conducting wire (AST0991.30) Rod (AST0991.31) Handle (AST0991.32) Micrometer lamp packing piece (AST0991.33) Switch (AST0991.34) Transformer (AST0991.35) Dial (AST0991.36) Screws (AST0991.37) Eyepiece (AST0991.38) Handwheel (AST0991.39) Handwheel (AST0991.40) Lever guide (AST0991.41) Collar (AST0991.42) Collar (AST0991.43) Collar (AST0991.44) Collar (AST0991.45) Collar (AST0991.46) Collar (AST0991.47) Eyepiece (AST0991.48) Eyepiece (AST0991.49) Disc (AST0991.50) Bolt (AST0991.51) Screws (AST0991.52) Lens (AST0991.53) Lens (AST0991.54) Stylo (AST0991.55) Lens (AST0991.56) Bracket (AST0991.57) Bolt (AST0991.58) Tray (AST0991.59) Handle (AST0991.60) Lid (AST0991.61) Metal sheet (AST0991.62) Metal sheet (AST0991.63) Metal sheet (AST0991.64) Metal sheet (AST0991.65) Metal sheet (AST0991.66) Parts of the Airy Transit Circle- (AST0991.67) Tube eyepiece (AST0991.68) Tube (AST0991.69) Airy's transit circle (Collimating telescope) (AST0991.70) Airy's transit circle (Collimating telescope) (AST0991.71) Airy's transit circle (Handle) (AST0991.72)

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