agreed 93-4 if fine IF you have an accurate thermometer and really good control systems. Most thermometers are only accurate to 2 degrees some cheap ones it is 4 degrees. Most IR guns is at least 2 degrees up or down and many are 4 degrees. To get accurate it is $$$ the best price I can find on an IR gun with a resolution of .7 is over 800$ I'd recommend no higher than 92 as if the thermometers are off 2 high it is still ok.