Take the guess work out of engine temperatures.    All engines need to run within manufacturers temperature specifications to get the best life and performance possible. This small investment could save you big bucks  on your RC engines. The Pro Exotics PE-2 Infrared Temp Gun adds a few more advanced features than our PE-1, but retains a great retail price of just $69 The PE-2 unit adds a much requested red sighting laser, and an expanded temperature range to 662F (easily switchable to 350C). The PE-2 has an adjustable emissivity setting for precise calibration, and perhaps best of all, a tight infrared "cone" distance to spot ratio (D:S) of 6:1. That means at a distance of 6 inches, you are reading an area just 1 inch in diameter. At a distance of 2 feet, an area of just 4 inches, as compared to our wider D:S ratio of 1:1 on the PE-1 unit. Whether shooting engine temperatures, food prep temperatures, or animal basking temperatures, the PE-2 is a terrific and reliable Temp Gun .