Balance

Description
This is a large and heavy metallurgical balance in a mahogany case with glass sides. The beam is 20.5 inches long. The graduated scale is marked “Paul Bunge Hamburg” and read by telescope. An ivory index at the base of the pillar is marked “No. 9 3897.”
Paul Bunge (1839-1888) began making precision balances in 1866, and soon introduced a balance with an unusually short beam but standard load capacity. Since the mass of the beam was small, so too was the time required for its oscillation.
Ref: German Educational Exhibition of Scientific Instruments (Berlin, 1904), pp. 18-20.
Hans R. Jenemann, The Chemist’s Balance (Frankfurt, 1997), pp. 49-50.
Location
Currently not on view
Date made
ca. 1847
date made
after 1866
after 1867
maker
Bunge, Paul
place made
Deutschland: Hamburg, Hamburg
Measurements
each pan: 66.6 cm x 27.5 cm x 18.4 cm; 26 1/4 in x 10 13/16 in x 7 1/4 in
eyepiece: 260 mm x 28 mm; 10 1/4 in x 1 1/8 in
case: 93.6 cm x 57.2 cm x 96.7 cm; 36 7/8 in x 22 1/2 in x 38 1/16 in
beam: 81.1 cm x 16.5 cm x 51.7 cm; 31 15/16 in x 6 1/2 in x 20 3/8 in
legs: 70.5 cm x 41.3 cm; 27 3/4 in x 16 1/4 in
ID Number
1981.0406.1
catalog number
1981.0406.1
accession number
1981.0406
Credit Line
Amy Chassid
subject
Weights & Measures
See more items in
Medicine and Science: Chemistry
Data Source
National Museum of American History, Kenneth E. Behring Center

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