Precision Machinist Square 4 Inch Engineer Square 90 Degree Right Angle Ruler Ground Hardened Steel with Seat 4 x 2.8 Inch

Precision Machinist Square 4 Inch Engineer Square 90 Degree Right Angle Ruler Ground Hardened Steel with Seat 4 x 2.8 Inch

• Precision: DIN 875 Grade 1, designed for precision layout, machine set-up and laboratory use
• Squares are true right angles both inside and outside
• These squares are made of hardened, tempered and polished steel, beams and blades are ground and polished for parallelism
• Have an inside notch for accuracy
• 4 inch blade and 2.8 inch beam, length of blade is measured from top of beam to end of blade

<b>Specification:</b><br> Material: high carbon steel<br> Straightness Precision: 7 & micro; m<br> Standard: DIN 875 Grade 0<br> <b>Size</b> <br> 50x40mm: 2.0 inches(H); 1.6 inches(W); 0.6 inches( Base width); 0.2 inches(Base thickness)<br> 75x50mm: 3.0 inches(H); 2.0 inches(W); 0.6 inches( Base width); 0.2 inches(Base thickness)<br> 100x70mm: 3.9 inches(H); inches(W); 0.8 inches( Base width); 0.2 inches(Base thickness)<br><br> <b>Package Included:</b> <br> 1 x Machinist Square<br>