Voltcraft vc100 series iso calibrated compact digital multimeters voltcraft vc175 iso the voltcraft vc175 compact entry level digital multimeter weighs only 200g and has a 4000 count display measures ac dc current and voltage frequency duty cycle resistance and continuity it also has a diode test hold and a non contact voltage ncv detection function it is overvoltage rated to cat iii 600 v and so is safe to use in and industrial environment reading range selection is performed a