Sidereal drive | Royal Museums Greenwich

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Sidereal drive

Sidereal drive known as Airy's water clock, for driving the great equatorial telescope. Regulated by Siemens' Chronometric Governor. The parts marked ZAA0530.1-44 can be viewed through the Whole/Part toggle.

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Object Details

ID:	ZAA0530
Collection:	Timekeeping
Type:	Sidereal drive
Display location:	Not on display
Creator:	Ransomes & Sims
Date made:	circa 1860
People:	Airy, George Biddell
Credit:	National Maritime Museum, Greenwich, London
Parts:	Sidereal drive Governor and main driving wheel (ZAA0530.1) Main casting (ZAA0530.2) Drive mounting (ZAA0530.3) Impeller and housing (ZAA0530.4) Segmental weight (ZAA0530.5) Valve (ZAA0530.6) Counter balance arm (ZAA0530.7) Lead funnel (ZAA0530.8) Conical flange (ZAA0530.9) Bolt with nut attached (ZAA0530.10) Mounting (ZAA0530.11) Bolt (ZAA0530.12) Bolt (ZAA0530.13) Bolt (ZAA0530.14) Bolt (ZAA0530.15) Bolt (ZAA0530.16) Bolt (ZAA0530.17) Bolt (ZAA0530.18) Bolt (ZAA0530.19) Bolt (ZAA0530.20) Bolt (ZAA0530.21) Square nut (ZAA0530.22) Square nut (ZAA0530.23) Metal pipe (ZAA0530.24) Metal pipe (ZAA0530.25) Nut (ZAA0530.26) Metal component (ZAA0530.27) Metal component (ZAA0530.28) Metal bar (ZAA0530.29) Bolt (ZAA0530.30) Metal pipe (ZAA0530.31) Washer (ZAA0530.32) Washer (ZAA0530.33) Washer (ZAA0530.34) Lead weight (ZAA0530.35) Lead weight (ZAA0530.36) Rod (ZAA0530.37) Balancing object (ZAA0530.38) Cylinder (ZAA0530.39) Connecting pipe (ZAA0530.40) Connecting pipe (ZAA0530.41) Connecting pipe (ZAA0530.42) Connecting pipe (ZAA0530.43) Connecting pipe (ZAA0530.44)

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