3/16" & 1/2" thick steel parallel set 4 pairs/set 0.0002" accur. #703C-755

2 pairs 3/16" & 2 pairs 1/2" thickness precision steel parallel combo set. All 6" long. Made of high quality hardened steel. Precision ground. Within 0.0002" in parallelism. Paired 0.0002" in height Inluding 1 pair of the following heights: 3/16 x 1-----------3/8 hole 3/16 x 1-1/4------7/16 hole 1/2x 1-1/2------1/2 hole 1/2 x 1-3/4 ------1/2 hole Fitted in deluxe plastic box.