Berger & Sons Dumpy Level

<< >>
This is marked "C. L. Berger & Sons. Boston, Mass. ML 1172 MADE IN U.S.A." and was probably made during World War II. Berger described it as an Engineers' Tilting Dumpy Level Model No. 10-X, noting that it was a "Wartime Development to simplify and expedite Peacetime Engineering Procedure." It was speedy, accurate, simplified, and streamlined, and could be used at night. This example belonged to the United States Geological Survey. It has an ivory finish, and the case is olive drab. The ML in the serial number may indicate that it was made for military use.
Ref: C. L. Berger & Sons, Inc., A Berger Instrument of Precision for Engineering and Surveying (Boston, 1945).
Currently not on view
C.L. Berger and Sons
place made
United States: Massachusetts, Boston
telescope: 9 1/4 in; 23.495 cm
overall: 9 1/4 in x 11 1/2 in x 8 1/2 in; 23.495 cm x 29.21 cm x 21.59 cm
ID Number
accession number
catalog number
Credit Line
U.S. Department of the Interior, Geological Survey
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Surveying and Geodesy
Data Source
National Museum of American History