Berger & Sons Dumpy Level

Description
This dumpy level is one of six identical instruments that the Interstate Commerce Commission of New Jersey ordered in July 1914, each one to be engraved "INTERSTATE COMMERCE COMMISSION." Berger described it as an instrument "of great precision, superior to any Wye Level of same aperture, power of telescope, and same sensitiveness of spirit level." Berger went on to say that it was the "best instrument for use in distant lands and rough country on account of its great compactness, simplicity, strength to withstand rough treatment, permanency of adjustment, and steadiness in strong wind, requiring but ordinary attention and care to keep in working order." New, it cost $100 (or $113 with fixed stadia wires). The signature reads "C. L. Berger & Sons, Boston 10316."
Ref: C. L. Berger & Sons, Inc., Engineering, Surveying & Mining Instruments (Boston, 1912), pp. 130–131.
Chicago Steel Tape–Berger Instruments (Document Management Systems, 1995), Book 32, p. 90.
Location
Currently not on view
Object Name
level
maker
C.L. Berger and Sons
Measurements
telescope: 17 1/2 in; 44.45 cm
place made
United States: Massachusetts, Boston
ID Number
PH*321788
catalog number
321788
accession number
246883
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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