ST-1505 - Analog Earth Resistance Tester
High quality Taut Band movement. Capable of measuring earth voltage (VAC). The timer operates automatically for about three to five minutes when the "PUSH BUTTON SWITCH" and "TIMER ON BUTTON" are pressed together. This will keep test "ON" for the duration of the timer.
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Hoyt Electrical Instrument Works Inc.
23 Meter Street
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