CHINA ASR-4324 Glow-Wire Tester is used for electricians and their components, components are also suitable for solid electrical insulating materials or other solid combustible materials, ASR-4324 Glow-Wire Tester Glow-Wire is made of nickel/chromium wire with a diameter of 4.0mm ring, temperature measuring device 0.5mm armored filament thermocouple, capable of high temperature of 1050 ℃.