Fluke fluke 279fc handheld multimeter with built in thermal imaging camera fluke 4755570 this true rms digital thermal multimeter features an integrated thermal imaging camera with a 3 5in diagonal colour display the dmm measures or tests ac voltage dc voltage voltage frequency ratio resistance capacitance continuity diodes and frequency use the ir camera for temperature measurements and thermal images br br thermal imaging multimeters are a first line troubleshooting tool for