I weigh my bikes on a scale very similar to that. It was sold on eBay as a fish scale. I don't have a good way to hang it, so I typically just hold it and lift the bike with the hook. It doesn't stabilize to a single number that way, but I can usually figure out about more or less what it's telling me, probably within the accuracy of the scale. In addition to pounds, ounces, and kilograms, mine will tell me the weight of things in Jin. I haven't had a use for that, but I could do it if I did. Also, the ghost of my freshman college physics professor insists on reminding me that kilograms are a measure of mass, not weight.