วันพฤหัสบดีที่ 5 เมษายน พ.ศ. 2555

Cheapest Extech Earth Ground Resistance Tester Kit


Cheapest Extech Earth Ground Resistance Tester Kit


Earth Ground Resistance Tester Kit - 382252
Includes all hardware necessary to measure earth ground in 3 ranges from 20 to 2000Ohm Measure Earth Resistance in three ranges (20/200/2000Ohm) Complete with test leads, auxiliary earth bars, heavy duty case and six 1.5V AA batteries 0 to 200VAC (40 to 500Hz) AC Earth Voltage/Frequency

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