The Astrolabe

Author / Editor
North, J. D.

Title
The Astrolabe

Published
Scientific American 230 (1974): 96-106.

Description
Describes the construction and functions of the astrolabe, an instrument "used for both astronomical and terrestrial observations," and an "analogue computer" for "determining the local time." Surveys historical descriptions of the construction of the instrument, with a summary of Chaucer's Astr as the "only good early treatise" on the subject in English. Includes color and b&w photographs and illustrations.

Chaucer Subjects
Treatise on the Astrolabe