Astronomical compendium base

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Base of the astronomical compendium for latitude 51° North.

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ID:	AST0502.5
Type:	Astronomical compendium base
Display location:	Not on display
Creator:	Unknown
Date made:	17th century
Credit:	National Maritime Museum, Greenwich, London, Georges Bernard Collection
Measurements:	Overall: 8 mm; Diameter: 32 mm
Parts:	Astronomical compendium Astronomical compendium (AST0502.1) Astronomical compendium day indicator and compass (AST0502.2) Astronomical compendium ivory ring (AST0502.3) Astronomical compendium lunar volvelle (AST0502.4) Astronomical compendium base (AST0502.5) Astronomical compendium base (AST0502.6)