Insize Machinist Square 400×200mm Series 4796 400 Insize Whitworth 55° Screw Pitch Gauge 4 42TPI Range Series 4820 330 Ordering Code: SR0029J30 E Z Coil Kit Economy 3 8" 16X2D Unc Helicoil Thread Repair Ordering Code: SR0029J30 ✔ Thread Size: 3 4" BSW (British Standard Whitworth)✔ Standard: ISO 529✔ Material: High Speed Steel (HSS) for enhanced strength and wear resistance✔ Thread Form: 55° flank angle for precise and secure Whitworth threading✔ Tolerance Class: Class 2 for a standard thread fit✔ Flute Type: Straight flute for effective chip removal✔ Lead Type: Intermediate lead for balanced cutting performance✔ Cutting Direction: Right hand cutting✔ Application: General purpose threading across various materials The Insize 4796 400 Machinist Square is designed for checking squareness and 90° angle measurement in workshop applications Application: Checking squareness and 90° angle measurement in general machining