iGaging 1-2-3 Machinist Blocks, Matched Pair – 36-123

• Matched pair & professional quality
• Precision Ground steel
• Case Hardened on all six sides
• 1 x 2 x 3 inch 2pcs pair set
• Squareness on all sides within 0.0001″
• 23 holes for easy clamping
• 5 tapped 3/8″- 16 TPI and 18 plain
• Useful in layout or grinding work
• Hardened and ground steel
• Matched accuracy of .0002″
• Accuracy of .0003″ per inch