Ammeter
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1997.0065.001
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- OBJECT TYPE
- Portable DC/Triple range
- DATE
- 1909–1933
- ARTIFACT NUMBER
- 1997.0065.001
- MANUFACTURER
- Weston Electrical Instrument Co.
- MODEL
- 1
- LOCATION
- Newark, New Jersey, United States of America
More Information
General Information
- Serial #
- 30559
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- Mahogany base. Metal case and hardware. Glass window. Paper scale. Bakelite knobs. Felt underlay between cover and base.
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 15.0 cm
- Width
- 16.5 cm
- Height
- 8.0 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Physics
- Category
- Electricity
- Sub-Category
- N/A
Manufacturer
- AKA
- Weston
- Country
- United States of America
- State/Province
- New Jersey
- City
- Newark
Context
- Country
- Canada
- State/Province
- Ontario
- Period
- Unknown
- Canada
-
Type sample of ammeter used by Canadian government standards office. - Function
-
Measures DC current in amperes. - Technical
-
Example of early accurate portable meter. Typical high accuracy instrument popular for inspections, field testing and use in laboratories. The high currents suggest that this meter was used to calibrate switchboard meters for use in power stations or large industrial facilities. Because of the high currents it measures, it is always used with external shunts. The meter itself is a permanent magnet moveable coil type portable DC ammeter. The instrument is probably magnetically shielded, and is horizontal reading. - Area Notes
-
Unknown
Details
- Markings
- Plates affixed to case reads: 'WESTON ELECTRICAL INSTRUMENT CO./ MODEL 1 No 30559/ NEWARK, N.J., U.S.A.' 'PATENTED NOV. 6,88 MAY 14,89/ APR. 29, 90NOV. 11,90 FEB. 17,91/ MAY 12,91 DEC. 29,91 MAR. 8,92/ APR. 26,92 JUN. 28,92 AUG. 16,92/ NOV. 22,92 JAN. 31,93 APR. 4,93/ MAY 12,93 MAY 16,93 JUN. 13,93/ JUL 10,94 NOV 20,94 JAN. 29,95/ OCT. 4,98 JUL. 16,01/ DESIGN PATENTS JUN. 10,90/ MAR. 20,94 MAR. 27,94 MAR. 22,98'. Printed on dial: First range is printed '0' to '1800' in gradations of 200, second range is printed '0' to '900' in gradations of 100, and the third range is printed '0' to '500' in gradations of 50; Information printed below scale reads: 'USE ONLY WITH EXTERNAL SHUNT/ WESTON/ DIRECT/ CURRENT/ AMMETER'.
- Missing
- From CA of 11/05/2001 by Matthew Bruce: Yes - There appears to be something missing from the back of the artifact.
- Finish
- Wooden base stained and varnished. Metal case painted a burgundy colour, glossy. Burgundy felt. Black knobs. Plates affixed to case are also burgundy in colour.
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Weston Electrical Instrument Co., Ammeter, circa 1909–1933, Artifact no. 1997.0065, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1997.0065.001/
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