This does work as advertised but there are a few issues with it. The first is that the sliding weight is far too loose. Yes in needs to slide easily but it is so easy that it is hard to get it exactly where you want it. It also doesn't necessarily stay where you put it. The second issue is the price. The price on Amazon in very in line but for about $15 less you can buy an electronic gram scale. The only issue with the digital gram scale is its thickness. The electronic gram scale is so thick that the tone arm on your turntable will not be level when you weigh it. With this scale it will be. With the electronic Graeme scale though you have a very precise measurement and can also use it for other things.