DC Voltmeter, Model 1, NO. 5541

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Title

DC Voltmeter, Model 1, NO. 5541

Subject

Physics
Electricity

Description

Physical Description
A Wooden/Brass Instrument that is housed in a Wooden box with a lock on the top and a leather handle on the side attached by two metal fasteners. The tool itself has a dial separated into increments of 10. It has 3 black plastic knobs that can be unscrewed and a button/switch on the front face. It also has multiple model numbers and a calibration screw on the bottom

Functional Description
Measures the DC Voltage between 2 inputs, an optional 3rd input can be used as well. The DC Voltage Potential between the inputs is displayed by the dial on the front of the instrument. The instrument itself is rated for 150V maximum and 3V minimum. The box for the instrument serves as a carrying case as well as a protective shield to the outside environment.

Creator

Timothy Maze, Liam Anderson, Zach Nicholas, Peter Amundsen with additions by Steven A. Walton

Date

late 1890s or early 1900s; July 12, 1930

Format

physical object

Language

Enlglish

Identifier

painted inventory no. on front: J161a
Model 1, NO. 5541; 40677, 2900, MCMT-8896

Coverage

USA

Physical Dimensions

Overall: 315mm x 300mm x 230mm
Box: 325mm x 345mm x 100mm
Glass window: 40mm diam
Knobs: 15mm diam

Materials

wood, bakelite, copper wiring, glass, felt

Maker

Weston Electrical Instrument Co., Newark, NJ

Inscriptions

[top, in meter] WESTON DIRECT CURRENT VOLTMETER
[top] WESTON ELECTRICAL INSTRUMENT CO. | NEWARK, N.J. U.S.A | PATENTED NOV. 6TH 1888 | No. | 11360
[top - painted] J161a
[top button] 150
[front face] PATENTED | NOVEMBER 6. 1888. | No. 392.386 and No. 392.387. | April 29. 1890 No. 427.022. | Feb. 17. 1891. No. 446.489. | OCT. 4. 1898. No. 611.722. | DESIGN PATENTS | JUNE 10. 1890. | No. 19.895 and No. 19.896. | MAR. 22. 1898. No. 28.393.
[meter scale - black] 0 to 150 by 1s
[meter scale - red] 0 to 15 by 0.1s
[front side adjustment screw] 0  |  CORRECTION
[right side lables] 40677 | 2900
[top side brass plate] MCMT-8896
[case top lables] 2900 | 40677
[case stamped letters] PL 5541  |  VOLT   3  |  15

Location

Fisher Hall, physics storage room

Bibliography

“Weston Electrical Instrument Corp.” Weston Electrical Instrument Corp. FTL Design, January 2, 2017. http://weston.ftldesign.com/.

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Collection

Citation

Timothy Maze, Liam Anderson, Zach Nicholas, Peter Amundsen with additions by Steven A. Walton, “DC Voltmeter, Model 1, NO. 5541,” Michigan Tech Inventory of Historic Scientific Instruments, accessed April 13, 2021, https://ihsi.omeka.net/items/show/202.