A standard pound of butter is 4 3/4" long with variable heights and widths that bring it to a weight of 16 ounces. Most have a cutting guide for cup measures on the box or wrapper. This stainless-steel guide measures cups as well as ounces, grams and tablespoons. It is particularly handy when you are dealing with a leftover stub from a one-pound block.
All measurements are etched into the surface of the 4 3/4" long guide. An instruction sheet tells you how to deal with all the measurements, including using them with 4-ounce butter sticks.