I just bought one on Amazon for $20, missed the deal. Could I use this to measure temps of a cup of water, a vessel of frying oil, a dough temp with accuracy ?
This will only measure the temperature of the surface
of an object. Just for fun I filled a container with warm water and compared the readings of a IR gun (pointed at the surface of the water) and a thermocouple immersed in the water. They were with one degree Fahrenheit of each other. Good enough for pizza making, IMO.
"With accuracy" is problematic since the IR emissivity, which is used by the probe to estimate surface temps of different materials, can vary widely.