Individual Square Gage Blocks HOW TO ORDER Square Block Size • All square blocks are .950" x .950" • Blocks have a .265" hole in the center • On blocks .200" thick and over, the hole is countersunk on both faces (croblox® Wear Blocks are countersunk on one face only) INCH Gage Blocks croblox® and Steel Gage Blocks croblox® Steel Grade A1 AA A1 AA 0 00 0 00 0.010 • 0.020 • 0.0201 • .0201 Through .0209 in Steps of .0001 • .021 Through .029 in Steps of .001 • 0.030 • 0.040 • 0.050 • • • 0.060 • .0625 (1/16) • • • 0.070 • .078125 (5/64) • • • 0.080 • 0.090 • .09375 (3/32) • • • 0.100 • • • .100 (Wear with Chamfered Hole) • 0.1000 • • • 0.1001 • • • 0.1001 • • • .1001 Through .1009 in Steps of .0001 • • • .101 Through .149 in Steps of .001 • • • .109375 (7/64) • • • .150 Through .190 in Steps of .010 • • • 0.200 • • • 0.250 • • • 0.300 • • • 0.350 • • • .400, .450, .500, .550 • • • .600, .650, .700, .750 • • • .800, .850, .900, .950 • • • 1.000 • • • 2.000 • • • 3.000 • • • 4.000 • • • 5.000 • • 6.000 • • 7.000 • • 8.000 • • 10.000 • • 12.000 • • 16.000 • • 20.000 • • Specify in this sequence: Shape, Material, Size and Accuracy Grade Shape Material Size Accuracy R=Rectangular S=Steel Listed in table Listed in table S=Square C=croblox Example: SS .125A1 = Square Steel block, size .125 with a Grade A1 accuracy 387 starrett.com S t arrett -W ebber G age B locks