Matco's ST25K Infrared Thermometer lets technicians determine correct operating distances using SmartSight', a dual laser system that merges 2 laser points to give a 0.5" spot size at an 8" distance. The new thermometer takes accurate readings of rapidly changing temperatures and detects any problems immediately. Additional features include: Wide temperature range up to 535 degrees C (999 degrees F). 500 msec response time. Built-in flashlight. Removable, powerful magnet that keeps the thermometer available no matter where you are. Specialized step-by-step applications manual.