Keuffel & Esser Abney Level

Keuffel & Esser described this as "Abney's Reflecting Level or Pocket Altimeter, 5 in., improved, with arc graduated to degrees for 60° in both directions, vernier reading to 5 minutes, gradients 1:1 to 1:10." This example is marked "KEUFFEL & ESSER CO N. Y." and "12485" and was made around 1906. New, it cost $13.50; the sewed leather case cost an additional $1.25. The University of Missouri at Columbia gave it to the Smithsonian in 1972.
Ref: Keuffel & Esser, Catalogue (New York, 1921), p. 432.
Currently not on view
Object Name
level (Abney)
Keuffel & Esser Co.
overall: 2 1/8 in x 1 1/4 in x 5 in; 5.3975 cm x 3.175 cm x 12.7 cm
place made
United States: New York
ID Number
catalog number
accession number
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Surveying and Geodesy
Data Source
National Museum of American History, Kenneth E. Behring Center


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