Reflection horizon

Title

Reflection horizon

Subject

Astronomy
Navigation
Surveying
Measuring instruments

Description

Black glass ground plane surface, 3 3/8 diameter, 3 leveling screws, fine graduated adjustable spirit level, and mahogany case.

In the 1913 Keuffel & Esser catalog (page 413) the reflecting horizon cost $16. The reflecting horizon is an alternative to the mercury artificial horizon and is used with a sextant when the horizon is not visible.

Creator

Keuffel & Esser Company, New York

Source

Keuffel & Esser Co. (1913). Catalogue and price list of Keuffel& Esser co, manufacturers and importers of drawing materials and surveying instruments. Keuffel & Esser Co: New York.

Publisher

Astronomy Department, University of Illinois, Urbana, Illinois

Date

about 1915

Contributor

Michael Svec

Rights

copyright Michael Svec

Format

image/jpg

Language

English

Type

physical object

Identifier

University of Illinois Observatory Collection A226.1, 226.2
University ID 016680 obs142, 016682 obs144

Coverage

University of Illinois Observatory, Urbana, Illinois

Files

DSCN0016.JPG
DSCN0194.JPG
Keuffel & Esser catalog for reflecting horizon

Citation

Keuffel & Esser Company, New York, “Reflection horizon,” University of Illinois Observatory Collection, accessed December 16, 2017, http://uiobservatory.omeka.net/items/show/17.