The inscription stamped on the base of this manometer reads “L. E. Knott Apparatus Co. Boston.” The firm, which was established in 1895, termed it a “Moveable Scale Manometer” designed “to determine the degree of exhaustion in experiments in Pneumatics.”

Ref: L. E. Knott Apparatus Co., Catalogue of Physical Instruments (Boston, 1912), p. 196.

Maker: L. E. Knott Apparatus Company

Location: Currently not on view

Place Made: United States: Massachusetts, Boston

See more items in: Medicine and Science: Physical Sciences


Exhibition Location:

Credit Line: Gift of Trenton State College

Data Source: National Museum of American History

Id Number: 1982.0230.12Catalog Number: 1982.0230.12Accession Number: 1982.0230

Object Name: manometer

Measurements: overall: 11 3/8 in x 5 3/16 in x 3 11/16 in; 28.8925 cm x 13.17625 cm x 9.36625 cmoverall: 11 3/8 in x 5 3/16 in x 3 11/16 in; 28.8925 cm x 13.17625 cm x 9.36625 cm


Record Id: nmah_1391020

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