To quickly gauge the temperature scales, I checked how warm it was in my apartment. I have my thermostat in the building set to 68°F; the Camry scale registered the temperature as 69°F. I think I can give the luggage scale a little bit of leeway for being about a degree off, since its main purpose won’t be to check the weather. A second test showed this one degree difference in variation between the scale and the thermostat, though it could possibly vary depending on what part of the flat you’re in.
When I threw the bag on the luggage scales at the airline counter, it initially registered at 10.0 pounds. Then a funny thing happened – it kept jumping back between 10.0 and 9.5 pounds, unable to settle on a number. I’m fairly suspicious that the airline counter scale was only able to measure in gradients of half a pound, preventing a precise read. If the backpack actually fell somewhere between 9.5 and 10 pounds—say at 9.7 or 9.75 pounds—then it would make sense that the scale had trouble distinguishing at which weight to register it.
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To measure a piece of baggage, it’s pretty easy. The bag simply needs to be attached to the hook on the scale. You then lift up the bag using the handle and wait for the display to stabilize and flash three times to signal that it’s done. On a flight to San Francisco, I decided to do a test run when it became clear I was going to run over my carry-on bag allowance. (Anything for a box of Girl Scout cookies.) The scale measured my backpack at 9.7 pounds. Just to be safe, I decided to throw the luggage scale in my purse to prevent anything throwing off its weight at the airport.
I am actually a little confused about including the ability to check temperatures with a luggage scale. It seems like by the time you use the device, you’ve already figured out the temperature of your environment; in fact, if anything, you would be more concerned about the weather where you’re headed. Anyways, it’s an interesting, if not completely random feature to have.