Review on 🌡️ MESTEK Infrared Thermometer Temperature Gun - Non-Contact Laser Digital Thermometers with Color LCD Screen, Adjustable Emissivity -58℉~716℉(-50℃~380℃) | Not Accurate for Human Temperature by Bill Wieser

I bought this to measure the temperature of an aluminum heatsink in a 3D printer app. be well over 100C. Don't want to measure hot brass, even with the settings suggested in the manual. The sensitivity settings don't help, it's just a correction factor. I used it at a distance of 10mm from the object of interest. Nada! Works great on the walls of your home but not on hot objects. Thinking maybe the reflection was to blame I went to measure the tip/heating element of my soldering iron. Nada! The measurement of another object is almost correct. Strange, I have an older similar type (reason I bought this one) that does the exact same thing. When I measure the inside of my oven, is it doing what it's supposed to do? It must relate to reflections, any obstacle (that makes sense) in the vicinity of the object of interest and all bets are void. But even at a distance of 1 cm there are no obstacles, nada.