Digital Pocket Scale With Calibrator

I bought two of these so I would have a spare. They are pretty accurate, and work well. I suggest between each individual weighing that you switch the device off and then on again. This makes for more accurate weighings. It's nice to have the scale within its own built-in case, it's less hassle. I'm not sure what the weight standard really does for you, because there is no way to adjust the measured weight against the standard. I guess all it can do is tell you whether you need to buy a new scale or not.