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Why does Analog Multimeter need AAA Batery
I'll embarrass myself with this one, but so what...
Just got this little hobbyist's pocket analog multimeter, and it has a slot for 1 AAA battery, currently empty. The manual only mentions it and doesn't say why is the battery needed. When I connect the probes to test the power, the needle deflects, correctly indicating voltage/resistance, once again - without the battery present. So what is the battery for then? |
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