Pretty much explains it. Has a conversion chart from grains to oz on the front of the scale so you can load your powder by the grain and then load the shot by the ounce. I've had this for a long time and used it for reloading rifle and pistol ammo. Accordingly if you ever wanted to dip your toe in loading TSS this is a cheap way to start I'm thinking. TYD $65 shipped USPS. Any questions let me know.