Ozeri Pronto Digital Multifunction Kitchen Scale

Not good for coin collectors: I just found a silver quarter which should weigh 6.25g or 0.022oz. On this scale it shows either 7g or 0.021oz which means two things: it really rounds up the grams too much and there are no tenths shown for grams! Ounces are great, but coin collector literature uses grams so you'd have to convert with a calculator all the time. Some very light things don't show up alone on the scale (high threshold to get past zero). If you put a $1 bill on it will read 1g. Cool, but if you put a piece of basla on it will read 0. If you put something heavier on it will read the weight THEN if you add the balsa the weight will go up by 0.0025 oz or whatever. No real problem, but let's say you wanted to weigh a single blueberry. You have to put a few blueberrys on to get a reading and then take one off to see how much it weighs by seeing how much less the reading was. This only is a problem if you're trying to weigh things at the absolute lower limit of the scale: a blueberry, a tiny watch screw, pieces of balsa or carbon fiber for model airplanes, etc. You could NOT weigh a postage stamp easily or reliably with this. Weight of normal size portions of food: 5 stars. Weight of a specific blueberry: 3 stars using the subtractive method. I was ripping 3 inch long pieces of cardboard and laying them on one at a time: 1 piece would read 0; 2 pieces would read 4. Remove 1 piece and it reads 0 again. Put 10 pieces on and you can add or remove a piece and deduce its exact weight. I need to weigh a single piece of tissue paper for use on a box kite. I can't weigh that tiny piece: I lay on the scale and it reads 0! But if I put a pencil on the scale it will give me a reading THEN I can add the tissue paper and see how much it weighs. If I take off the tissue the readout drops down to just the weight of the pencil. HOWEVER if I leave the tissue and remove the pencil the readout says 0! The tissue is to light to start the scale alone, but with something heavy getting the scale to read anything other than 0 it can show the weight of adding or taking off the tissue which gives me the weight of the tissue (once I minus the pencil's weight in my head, tare won't work for this extremely light weight example). Adding carbon fiber bits to a glider: you can't weigh the carbon alone: put the glider on the scale and then add the carbon piece to see the difference. Basically, I think this scale is 5 stars for things weighing more than a gram, or piles of things. If you want to weigh a single wristwatch screw either: keep something heavy like a dollar bill around to "prime" the scale or get a scale that has a much lower read level. To be fair this *is* marketed as an ultra inexpensive FOOD scale. It'll tell you how much 4 or 40 grapes weigh. Dissecting a single grape into halves and weighing each half is possible using the subtractive method (adding each half to something heavier already on the scale). It came with TWO sets of batteries. You can tare: put a bowl on the scale, click tare to zero the reading, slowly pour things into the bowl and watch the readout slowly climb. At some point I'll spend about 20x as much on a scale for light weight items so I can weigh a single wristwatch screw or postage stamp or carbon fiber strut brace. Who knew most of the things I wanted to weigh, weighed less than a dollar bill? If the things you want to weigh will end up weighing more than a dollar bill than get this scale. If they're lighter: get a different scale.