Gossen Metrawatt Metrahit Pro
It's never a good idea to guess with measurements, that's what measuring tools are for. No need to look for a power outlet, since it runs on batteries. Just get at it!
Conrad Electronic
Gossen Metrawatt METRAHIT AM PRO Handheld multimeter Calibrated to (DAkkS standards) Digital CAT III 1000 V, CAT IV 600 V Display (counts): 12000
£542.55
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