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My Mastercraft multimeter.
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I bought this multimeter a while ago at Canadian Tire. I waited 'till it gets in clearance. Instead of 59,95C$ I got it for 23,95C$!
Since I bought it I never had any problems, and it still runs with the same half-discharged 9-volt battery! XD
On the pic the device was measuring the resistance of a 40W incandescent lamp. I also lit the backlighting, just for the pic LOL.
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But it seems, then this approach changed in last ~10 years at east in Europe, as new bulbs were rated at 230V, so the mains nominal. And my experience is, then they are pretty accurate in the real wattage input here, standard deviation way better then 1%...