Hardened & Ground Flanged Beam Try Square

• Used to check Squareness & straightness. 
• Accuracy for Squareness & Flatness is within ±0.010 mm. / 150H.
• Made from single piece high quality tool steel.
• Inside & outside are accurate right angles.
• A groove on the inner corner of the stock, aids in the clearance of burr or dirt. 
• Hardness 60 ± 2 Rc. 
• Packed in individual wooden box.