SPI Parallels, Per Matched Pair, Laboratory Grade AA, 2 Faces, 2 x 3 x 18 – 50-309-4

SPI Parallels, Per Matched PairLaboratory Grade AA, 2 Faces,2 x 3 x 18 Accuracies indicated are per 12 inches.Nominal dimensions .015" in width and length between finished surfaces, 1/16" for length and between unfinished surfaces.See all SPI Parallels, Pe