Velometer
notes: label: Description
content: A velometer measures air speed in a given area. This example is a Type 3002, Serial 5032, Boyle form, made by the Alnor Instrument Co.
label: Description
content: John A. Obermaier (1890-1958) established Illinois Testing Laboratories in Chicago in 1920. That firm was offering Boyle velometers by 1935, explaining that they could be used to measure the velocity of air in heating and ventilating work.
label: Description
content: Alnor Instrument and Pyrometer Co., a division this firm, was going by 1946; the name represented Obermaier’s two sons, Alfred and Norman. That firm, later known as The Alnor Instrument Co., boasted “Precision Instruments for Every Industry.” It announced plans to move to Niles, Ill., in 1964; and it was sold to Swedish investors in 1978.
label: Description
content: Ref: John R. Boyle, “Air Velocity Meter,” U.S. Patent 2,060,848 (Nov. 17, 1936), assigned to Illinois Testing Laboratories, Inc.
label: Description
content: John A. Obermaier and Alfred A. Obermaier, “Air Velocity Meter,” U.S. Patent 2,690,671 (Oct. 5, 1954).
label: Description
content: Alnor, Illinois Testing Labs ad in Scientific American (1968), including velometer.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Medicine
label: See more items in
content: Health & Medicine
creditLine: label: Credit Line
content: Gift of American Conference of Governmental Industrial Hygienists
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1986.0837.14
label: catalog number
content: 1986.0837.14
label: accession number
content: 1986.0837
label: serial number
content: 5032
objectType: label: Object Name
content: velometer
physicalDescription: label: Measurements
content: overall:;
label: Measurements
content: overall: container: 16 in x 12 in x 1 1/4 in; 40.64 cm x 30.48 cm x 3.175 cm
label: Measurements
content: overall: container: 9 in x 6 in x 1/8 in; 22.86 cm x 15.24 cm x .3175 cm
label: Measurements
content: overall: container: 9 1/8 in x 6 in x 1/16 in; 23.1775 cm x 15.24 cm x .15875 cm