Beha Amprobe DM78C
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!
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From ManoMano
Beha Amprobe - DM78C Credit Card Sized Multimeter
£85.99
Conrad Electronic
Beha Amprobe DM78C Handheld multimeter Digital CAT II 600 V, CAT III 300 V Display (counts): 3400
£89.76
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