Testo infrared temperature measuring instruments testo 0563 8312 this thermometer set from testo gives you all the equipment you need to carry out quick and precise temperature measurements in trade and industry the 830 t2 has a 2 point laser measuring spot marking and 121 optics the surface temperature sensor included in this kit is ideal for carrying out surface temperature measurements on materials with a low degree of emissionthe kit includes an infrared thermometer for non contact h