1503: 0.1 MΩ to 2000 MΩ. 1503: 500 V, 1000 V. Accepts optional Fluke TPAK magnetic hanging system to free your hands for other work. Insulation test range 1503: 0.01 MΩ to 2000 MΩ. 1503: 500 V, 1000V.
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