Astrolabe Catalogue

 

Image of the tympan or plate - click for larger version
Tympan 2b
This plate is incomplete, perhaps due to the fact that the equator was engraved too deeply and cuts through the plate.

Circles

Type Labelled Style Notes
Equator Plain line.
Tropic of Cancer Plain line.
Tropic of Capricorn Plain line.

Lines

Type Labelled Description
Meridian line
Horizon rectus
MHS Home | Contact Us | ©2006 Museum of the History of Science