KINEX4001-03- 200 Machinist Knife Edge Solid Inspection Square 8 x 5 x 5/16 Inches Thick (200 mm x 130 mm) DIN 875/00 (Square w/in 4 microns or 0.0001 Inches)

Love the accuracy and the knife edge. I use this when tuning my woodworking machines and jigs. Measures perfectly against my Starrett gauges (the highest precision I have).

Love this machinist square nice and slim