Combina tion Squares 11H Cast Iron Heads With reversible lock bolt, scriber, spirit level (except 4"), and hardened steel, photo-engraved blade with regular or satin chrome finish. Cast iron head with black wrinkle finish. C11H-12-4R C33H-12-4R 33H Forged and Hardened Steel Heads These squares have the same features as the 11 cast iron heads except that the square heads are forged hardened steel with smooth, black enamel finish. 4-24" Combination Squares with Square Head 11H Cast Iron Heads with Black Wrinkle Finish 33H Forged and Hardened Steel Heads with Smooth Black Enamel Finish Size Graduation Blade Cat. No. EDP Cat. No. EDP 11H-4-4R 50049 33H-4-4R 50203 4" 4R – 8ths, 16ths, Quick Reading 32nds, 64ths Regular C11H-4-4R 56360 C33H-4-4R 56390 Satin Chrome 11H-6-4R 50051 33H-6-4R 50205 6" 4R – 8ths, 16ths, Quick Reading 32nds, 64ths Regular C11H-6-4R 56362 C33H-6-4R 56392 Satin Chrome 11H-6-16R 50053 33H-6-16R 50207 6" 16R – Quick Reading 32nds, 64ths, Aircraft Quick Reading 50ths, 100ths Regular C11H-6-16R 56364 C33H-6-16R 56394 Satin Chrome 11H-12-4R 50055 33H-12-4R 50209 12" 4R – 8ths, 16ths, Quick Reading 32nds, 64ths Regular C11H-12-4R 56366 C33H-12-4R 56396 12" 4R – 8ths, 16ths, Quick Reading 32nds, 64ths Satin Chrome C11H-12-4RW/SLC* 66896 C33H-12-4RW/SLC* 66897 11H-12-16R 50057 33H-12-16R 50211 12" 16R – Quick Reading 32nds, 64ths, Aircraft Quick Reading 50ths, 100ths Regular C11H-12-16R 56368 C33H-12-16R 56398 Satin Chrome 11H-18-4R 50059 33H-18-4R 50213 18" 4R – 8ths, 16ths, Quick Reading 32nds, 64ths Regular C11H-18-4R 56370 C33H-18-4R 56400 Satin Chrome 11H-18-16R 50061 33H-18-16R 50215 18" 16R – Quick Reading 32nds, 64ths, Aircraft Quick Reading 50ths, 100ths Regular C11H-18-16R 56372 C33H-18-16R 56402 Satin Chrome 11H-24-4R 50063 33H-24-4R 50217 24" 4R – 8ths, 16ths, Quick Reading 32nds, 64ths Regular C11H-24-4R 56374 C33H-24-4R 56404 Satin Chrome 11H-24-16R 50065 33H-24-16R 50219 24" 16R – Quick Reading 32nds, 64ths, Aircraft Quick Reading 50ths, 100ths Regular C11H-24-16R 56376 C33H-24-16R 56406 Satin Chrome 150-600mm Combination Squares with Square Head 11MH Cast Iron Heads with Black Wrinkle Finish 33MH Forged and Hardened Steel Heads with Smooth Black Enamel Finish Size Graduation Blade Cat. No. EDP Cat. No. EDP 11MH-150 56241 33MH-150 56247 150mm mm and 1/2mm Both Sides Regular C11MH-150 56380 C33MH-150 56410 Satin Chrome 11MH-300 56243 33MH-300 56249 300mm mm and 1/2mm Both Sides Regular C11MH-300 56382 C33MH-300 56412 Satin Chrome 11MH-600 56245 33MH-600 56251 600mm mm and 1/2mm Both Sides Regular C11MH-600 56384 C33MH-600 56414 Satin Chrome 300-600mm and 11-3/4 – 23-1/2" Combination Squares with Square Head 11MEH Cast Iron Heads with Black Wrinkle Finish 33MEH Forged and Hardened Steel Heads with Smooth Black Enamel Finish Size Graduation Blade Cat. No. EDP Cat. No. EDP 11MEH-300 50067 33MEH-300 50221 300mm and 11-3/4" 1/2mm and 32nds One Side; mm and 64ths Reverse Side Regular C11MEH-300 56386 C33MEH-300 56416 Satin Chrome 11MEH-600 56121 33MEH-600 50237 600mm and 23-1/2" 1/2mm and 32nds One Side; mm and 64ths Reverse Side Regular C11MEH-600 56388 C33MEH-600 56418 Satin Chrome * Includes redemption card for Standard Letter of Certification (SLC). 268 S quares