electrical measuring instruments

green electronics gadget red machine art multimedia hand toy signage lighting design light vehicle guitar electronic circuit testing electrical measuring instruments analog multimeter soldered surface focused dial plate test technical-works industry-engineering voltmeter ohmmeter soldered ac-dc ammeter ampere analog-multimeter analog-tools card circuit-board closeup commutator component connection diode electric-current electrical electronic electronic-industry service-background engineering equipment industry kilo-ohm kilohm lab-tools measuring mega-ohm megohm multi-meter ohm pcb probe quality-control repairman repairs resistance resistor retro technical-service technical-support technician test volt voltage watt workshop