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Electric Manufacturing Co. Tangent Galvanometer

Specifications

Electric Manufacturing Co. Tangent Galvanometer

Category

Science and Technology

Classification

CHENHALL - Tools & Equipment for Science & Technology - Electrical & Magnetic T&E - Electrical & Magnetic Measurement Devices - Instrument, Electrical - Galvanometer

Object Origin
Manufacturer:

Electric Manufacturing Company

Place of Production:

Troy, New York, United States of America

Physical Characteristics

Object Description: Brass metal hoop mounted perpendicular to a brass rod with a three (3)-legged base. The tangent galvanometer sits at the top of the rod, in the center of the hoop. It has a silver face with black cursive text printed at the top and bottom and a long, thin silver needle. Near the bottom of the center rod, close to the base, is a horizontal metal pole with two (2) thumb screws at the end. Silver text is handwritten on the end of the leg. A gold ova...

Materials:

brass

glass

Marks: On face: "Electric Mfg. Co. / Troy, N.Y." On base: Gold label: "ILL. INST. of TECH. / NO. G-119 / PHYSICS DEPT." Silver text: "PG+108" Other leg: "253"

Measurements: Object:
    Height: 26 in, Length: 16 in, Width: 21.5 in
    Weight: 18.6 lbs

Credit

Gift of Bert Benade, 2009.11.3

Display Status

On Exhibit

Electric Manufacturing Co. Tangent Galvanometer

About: Electric Manufacturing Co. Tangent Galvanometer

About: Electric Manufacturing Co. Tangent Galvanometer

This 1910s galvanometer from the Electric Manufacturing Company was used to measure small electric currents. The outer ring contains a coil of wire, and the dial in the center contains a magnetic compass. When a current is run through the wire, a magnetic field is created, and the angle of the compass needle can be used to calculate the amount of current.

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