I needed a scale to weigh the powdered supplements I take (powders are cheaper than capsules). I bought the AWS 100g x 0.01g Digital Scale in January. It’s about the size of an iPhone and measures up to a limit of 100 grams in 0.01 gram increments.

I also bought a 100 gram weight ($7) to calibrate the scale.

The first thing I did was weigh some coins. A Nickel is supposed to have a mass of 5 grams. All the Nickels I weighed had slightly different masses. Same with Pennies and Half Dollars.

I also weighed Bicycle playing cards. Each card has a mass of about 1.75 grams. I weighed all 26 red cards: 45.51 grams. The black cards came in at 45.57 grams. The four Aces had a combined mass of 7 grams on the nose. Would the Tens weigh more, since they have more ink than the Aces? I measured them: 7.03 grams. I tried a different deck. Aces: 7.03 grams. Tens: 7.03 grams. (I’d love to weigh these cards on a 0.001 gram scale!)

Submitted to Cool Tools by Mark Frauenfelder