Upper bell jar

Upper bell jar.

ID:	ZAA0760.19
Type:	Upper bell jar
Display location:	Display - ROG
Creator:	Fedchenko
Date made:	Unknown
Credit:	National Maritime Museum, Greenwich, London
Measurements:	Overall: 420 mm x 250 mm
Parts:	Fedchenko Astronomical Regulator, Type AChF-3, Number 29, 1970 (Clock) Free pendulum (ZAA0760.1) Control unit (ZAA0760.2) Electric impulse dial (ZAA0760.3) Pendulum bob (ZAA0760.4) Beat scale (ZAA0760.5) Pendulum battery pack (ZAA0760.6) Eye piece (ZAA0760.7) Mirror (ZAA0760.8) Suspension (ZAA0760.9) Pendulum magnet (ZAA0760.10) Electromagnetic coil (ZAA0760.11) Pendulum pin (ZAA0760.12) Contact (ZAA0760.13) Manometer (ZAA0760.14) Lower bezel (ZAA0760.15) Upper bezel (ZAA0760.16) Pendulum rod (ZAA0760.17) Lower bell jar (ZAA0760.18) Upper bell jar (ZAA0760.19) Tank and pendulum support (ZAA0760.20) Wall bracket (ZAA0760.21)