File:Western Union standard galvanometer.jpg
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Summary
| Description | Drawing of tangent galvanometer from around 1890, made by J.H. Bunnel Co. Base 7 in. diameter. This was a type known as a 'Western Union standard'. It has 5 separate coils of resistance ~0, 1, 10, 50, and 150 ohms. The 7/8 in. compass needle in the center can have a silk fiber suspension. |
| Date | |
| Source | Downloaded from Lockwood, Thomas D. (1890) Electrical Measurement and the Galvanometer: It's construction and uses, 2nd Ed., J.H. Bunnel & Co., New York, p.36, fig.11 on Google Books |
| Author | Thomas Dixon Lockwood |
| Permission (Reusing this file) |
Public domain - published in US before 1923 |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:03, 11 December 2007 | | 738 × 818 (95 KB) | Chetvorno | {{Information |Description=Drawing of tangent galvanometer from around 1890, made by J.H. Bunnel Co. Base 7 in. diameter. This was a type known as a 'Western Union standard'. It has 5 separate coils of resistance ~0, 1, 10, 50, and 150 ohms. The 7/8 |
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