Amprobe pm55a pocket multimeter amprobe pm55a p buy amprobe pm55a pocket multimeter ndash the ultimate shirt pocket sized meter and less than 3oz in weight with full functionality offering ac and dc voltage to 600v ac and dc current resistance capacitance frequency diode test and continuity w beeper br br br another key feature is autotec which automatically selects between ac voltage dc voltage or resistance measurement based on the test point to which the leads are connected f