This thermometer really works, and the dual laser is worth the few extra dollars you'll spend for it. By using two lasers, you can not only aim the thermometer but also gauge the distance/spot size (imagine a circle sandwiched between the two laser dots) so you know exactly how much area you're averaging. (Documentation and a handy label on the unit recommend a distance of 14 inches for the best result). I tested against other thermometers and found this one to be very accurate. For less than $20 it feels like a much more expensive instrument because the details are "just right". Pull the trigger and there's a delay of just under a second while the device calibrates; then the lasers and backlight come on. The display shows the current spot temperature plus the maximum so far for that session. Buttons are in a good place; you can turn off the lasers or screen backlight if you don't need them (and those settings are remembered!), and the display holds for just the right amount of time after you release the trigger.
It's educational to just walk around your house and measure the temperature of ordinary things: a human's skin temperature runs around 87-90F, coffee from a single-pot brewer just over 140F. It's great that it's instantaneous and there's nothing to clean after each measurement. Once you know these temperatures you'd be able to spot issues (air conditioning not cold enough? Refrigerator at the right temperature? What temperature is "6" on the stove?.
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