The Lyman Scale Check Weight Set can be used for any scale, not just Lyman models, and also includes a handy storage case for the weights and a pair of tweezers to use in handling the weights. Simply put, this weight set is just what you need to check the calibration of your Lyman scale. Included in the Lyman Check Weight Set is a combination of weights that totals 210.5 grains when used all together. The individual weights included in the set are as follows: a 100-grain, a 50-grain, two 20-grains, a 10-grain, a 5-grain, two 2-grains, a 1-grain and a _-grain weight.