Digital Infrared Thermometers with NISTtraceable accuracy are the most advanced,easy to use and durable I.R. Thermometers inthe world. Their precision ground mirrors areprotected by rare-earth germanium filters andtightly focus I.R. energy on the patented detector for accuracy as good as ±0.3% fullscale with 1°F/°C resolution.Temperature readings are updated a quick-fire3 times per second on a unique red liquidcrystal display – more readable than black.The entire body is either cast or extruded aluminumwhich provides shielding against strayEMF from machinery and engines.Factory Mutual Approved models for potentiallyexplosive environments are also available