Electrical and scientific instruments and apparatus : november 20th, 1899 (1899)
Elmer G. Willyoung & Co · New York : E.G. Willyoung · leaf 24
Fig. 11. W4110, etc. … »Jf^ -a^^^ Fig. 12. W4125. 20 KELVIN REFLECTING GALVANOMETERS. The following Kelvin Galvanometers are provided with coils of but IJ^ diameter by % thick while the magnetic needles making up the systemare but a few mms long. The mirrors are very small and thin but veryperfect; the entire system thus…
Electric apparatus and appliances · Equipment and supplies
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