The Fluke 170C Series (175C / 177C / 179C) are economical 6,000-count True-RMS multimeters sharing identical core hardware, differentiated only by accuracy, backlight and temperature measurement functions, designed for electrician service, HVAC, automation, small equipment and residential electrical troubleshooting.

175C: Entry base model, no display backlight, basic DC voltage accuracy ±0.15 %, no temperature measurement for basic voltage, resistance and continuity tasks;

177C: Mid-range industrial model with white backlit LCD, upgraded DC accuracy of ±0.09 %, no temperature function, ideal for dim workshops and low-light equipment rooms;

179C: Top full-featured model retaining the 177C’s high accuracy + backlight, with added K-type thermocouple temperature measurement for full thermal, motor and heating equipment diagnostics, the primary workhorse for professional service technicians.