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The ECM INDUSTRIES LLC GMT-312 is a 12-range pocket-sized analog multimeter designed for field use by electricians, HVAC technicians, and other trade professionals who need a compact, reliable testing instrument. The unit covers 5 measurement functions and ships complete with test leads and printed instructions. A mirrored, color-coded scale reduces parallax error during readings, and a positive off position ensures the meter is fully de-energized when not in use. UL Listed construction meets common jobsite safety requirements. At 1.82 pounds, the GMT-312 is light enough to carry in a tool bag or shirt pocket without adding bulk to a service kit.
This analog multimeter is suited for residential and light commercial service work where a quick, portable voltage, resistance, or current check is needed without powering up a full bench-style instrument. The pocket form factor makes it practical for HVAC service calls, low-voltage control circuit checks, panel inspections, and general electrical troubleshooting. It is packaged in quantities of 4, making it a practical stocking item for shops and fleet service vehicles.
Designed as a general-purpose analog multimeter for use in residential and light commercial electrical, HVAC, and low-voltage control circuit testing applications.
Always de-energize and lock out circuits before connecting test leads to live terminals when the task permits. Verify the meter function and range setting match the circuit type being measured before making contact. Licensed electricians should follow applicable NEC guidelines when testing energized panels or branch circuits. Store test leads coiled and away from sharp edges to preserve lead integrity.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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