Precise, quick, practical: they measure the surface temperature of steel, stainless steel, iron, aluminum, plastic, glass, etc. Particularly suitable for preheating, post-welding, hardening, tempering, reclamation, etc. It is necessary to mark the verification point with the stick and when the suitable temperature is reached, the sign tends to melt. No calibration required. Measurement accuracy of ± 1 ° C. Clear indication of the temperature over the entire length of the stick. With closing cap and clip.