HT HT12
One centimetre here and there is really not inconsequential, use an electric measuring tool to be safe. No need to look for a power outlet, since it runs on batteries. Just get at it!
Conrad Electronic
HT Instruments HT12 Handheld multimeter, Clamp meter Digital CAT II 600 V, CAT III 300 V Display (counts): 3400
£136.86
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