Fowler 52-437-007-0 ADJ PARLST 3/8-1 5/16

Features Each parallel has two dovetailed pieces that slide on each other and lock in position with set screws. Easily adjusted and set up to size with a micrometer. They can be quickly inserted in slots and expanded to size. Height size ranges from 3/8" to 15/16". Slot size determined by measuring the parallels externally with a micrometer.