“FOR MAIN SWITCH BOARD
MAKERS:TOYO KEIKI
TYPE: INSULATTON RESISTANCE MONITOR
DWG:J-7815-16/M/LV ” “INSULATION RESISTANCE METER
RANGE: ~5~0.2~0 MOHMS
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TO REPLACE SPARE PARTS ON 220VOLTS MAIN SWITCH BOARD
AND FOR ELECTRICAL SPARE.” TOYO KEIKI.