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

Citation

Keuffel & Esser Company, New York, “Reflection horizon,” University of Illinois Observatory Collection, accessed June 13, 2025, https://uiobservatory.omeka.net/items/show/17.