Double-mirror heliotrope

Made:
1822

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Double-mirror heliotrope (Spiegelkreutz-heliotrop) for geodetic work, designed and used by C.F. Gauss on the Altona-Hanover arc of meridian 1820 - 1825. By Rumpf.

Details

Category:
Surveying
Object Number:
1914-376
type:
heliotrope
credit:
Astronomer Royal (Royal Observatory, Greenwich)