An experimental study of the fahy permeameter (1918)
National Bureau of Standards · leaf 37
Fig. 20.—Electrical connections wlien switches are in position 5 L-AA/WW-M/WWW^ ■yrmr RO RCpar. mrsmfc … Fig. 21.—Electrical connections when switches are in position 6 S H/WWVV-^^-WVWWV yT3Tnr /?^ jnrrsir
Magnetism · measurements and use of instruments/ B8000 Power systems and applications
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