saximus
Almost Legendary
I got that too, but if I point it at bottom of the tub, the IR ray goes through the translucent plastic n hits the cord which obviously won't give the correct temp of the surface of the plastic
That's not how they work. I'm guessing the "ray" you're referring to is the laser pointer in it which is purely there to help you work out where you're aiming. The infrared radiation will be radiating from the tub material and be sensed by the gun. you can't see that.
Yes. They're not designed to measure surface temperature like that.Also, you think that the small digital thermometers would be off by 10 - 12 degrees?