Wallace & Tiernan Aneroid Barometer

This is marked “Wallace & Tiernan / Pennwalt / Belleville, New Jersey” and “Model FA 185300.” The scale reads from 13.0 to 21.0 inches of mercury, divided to 0.02 inches and numbered each 0.1 inch. A second scale reads from 21.0 to 30.5 millibars. There is a leather carrying case.
Charles Wallace and Martin Tiernan began in business in New York City in 1913, trading as Wallace & Tiernan. Their first product, the very successful chlorinator, was designed to disinfect water supplies with chlorine gas. The firm moved to Belleville, N.J., in 1921. It began making precision pressure instruments in the 1930s. A merger in 1969 led to the establishment of the Pennwalt Corp.
Currently not on view
Object Name
barometer, aneroid
date made
Wallace & Tiernan
overall: 12.5 cm x 22 cm; 4 29/32 in x 8 21/32 in
place made
United States: New Jersey, Belleville
ID Number
catalog number
accession number
Measuring & Mapping
See more items in
Medicine and Science: Physical Sciences
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
National Imagery and Mapping Agency

Visitor Comments

2/27/2014 1:28:06 PM
Nancy Tiernan
I have a Wallace & Tiernan Barometer Model No. FA 185260 serial no. AC 10920 in leather case with strap.
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