IS (1903 to 1905) Up
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The Type IS' electromagnet was similar to the one in the Type I meter. The full-load adjustment was unique since the brake magnets were fixed in position, the full-load adjustment effected by adjusting moveable angle irons on the magnet ends as needed.The light-load adjustment was identical to the Type I, using a lever to move a metal punching near the voltage coil's flux path. A service version was made for a very short time (possibly only as a field trial) and was designated Type I-2. Type IS
GE Type IS meter booklet