The is a vintage analog 8-range multitester originally sold by RadioShack . While a direct PDF for the exact 22-212 manual is rare, its operation is nearly identical to other vintage Micronta models like the 22-210 or 22-204C . Key Specifications & Features Ranges : 8 total measurement ranges. DC Voltage : 15V, 150V, 1000V (2000 ohms/Volt sensitivity). AC Voltage : 15V, 150V, 1000V. DC Current : Up to 150mA. Resistance : Up to 100k ohms (Center scale 3.6k ohms).
Never measure resistance in a "live" circuit. Ensure all power is off and capacitors are discharged. micronta multimeter 22 212 user manual
Before testing, power must be disconnected from the circuit and capacitors discharged. The manual warns against applying any voltage to the terminals while in the Ohms position. The is a vintage analog 8-range multitester originally