150mm - 5-3/4" Full-Flexible Steel Rules with Millimeter and Inch Graduations Cat. No. EDP Length Width x Thickness Graduations Feature Remarks C331-150 51331 150mm 12 x 0.4mm 31 – 32nds and 64ths on One Side; mm and 1/2mm on Reverse. All Four Edges Graduated from Same End C334-150 56262 5-3/4" 12 x 0.4mm 34 – mm and 1/2mm on One Side; Quick-Reading 10ths (.10) and Aircraft Quick-Reading 50ths (.02) on Reverse 150mm - 6" Spring-Tempered Steel Rules with Millimeter and Inch Graduations Cat. No. EDP Length Width x Thickness Graduations Feature Remarks C636ME-150 52634 150mm (5-3/4") 19 x 1.2mm 36 – 32nds and 1/2mm on One Side; 64ths and mm on Reverse C636ME-150 W/SLC 66890 With Standard Letter of Certification* C636EM-6 57064 150mm 6" 19 x 1.2mm 36 – 32nds and 1/2mm on One Side; 64ths and mm on Reverse Full 6" with Millimeter Reading to 150mm; plus a Blank End 300mm - 11-3/4" Full-Flexible Steel Rules with Millimeter and Inch Graduations Cat. No. EDP Length Width x Thickness Graduations Feature Remarks C331-300 51332 300mm 12.7 x 0.4mm 31 – 32nds and 64ths on One Side; mm and 1/2mm on Reverse. All Four Edges Graduated from Same End C334-300 56696 11-3/4" 12.7 x 0.4mm 34 – mm and 1/2mm One Side; Quick-Reading 10ths (.10) and Aircraft Quick-Reading 50ths (.02) on Reverse 300mm - 11-3/4" Spring-Tempered Steel Rules with Millimeter and Inch Graduations Cat. No. EDP Length Width x Thickness Graduations Feature Remarks C636-300 52635 300mm (11-3/4") 25.4 x 1.2mm 36 – 32nds and 1/2mm on One Side; 64ths and mm on Reverse C636-300 W/SLC 66891 With Standard Letter of Certification* 500mm - 19-1/2" Full-Flexible Steel Rules with Millimeter and Inch Graduations Cat. No. EDP Length Width x Thickness Graduations Feature Remarks C334-500 56697 500mm (19-1/2") 19 x 0.5mm 34 – mm and 1/2mm on One Side; Quick-Reading 10ths (.10) and Aircraft Quick-Reading 50ths (.02) on Reverse 500mm – 19-1/2" Spring Tempered Steel Rules with Millimeter and Inch Graduations Cat. No. EDP Length Width x Thickness Graduations Feature Remarks C636MEC-500 73320 500mm (19-1/2") 32 x 1.1mm Zero scale on 32nds and 1/2mm Side; Incremental Scale on 64ths and mm Side 500mm - 19-1/2" Spring-Tempered Steel Rules with Millimeter and Inch Graduations Cat. No. EDP Length Width x Thickness Graduations Feature Remarks C636-500 52636 500mm (19-1/2") 29 x 1.2mm 36 – 32nds and 1/2mm on One Side; 64ths and mm on Reverse 1000mm - 39-1/4" Spring-Tempered Steel Rules with Millimeter and Inch Graduations Cat. No. EDP Length Width x Thickness Graduations Feature Remarks C636-1000 52637 1000mm (39-1/4") 32 x 1.2mm 36 – 32nds and 1/2mm on One Side; 64ths and mm on Reverse C636-1000 W/SLC 66892 With Standard Letter of Certification* * Includes redemption card for Standard Letter of Certification (SLC). Steel Rules Steel Rules with Millimeter and Inch Gradua tions 150MM-1000MM All rules are full millimeter lengths, except where noted.Additional sizes and variations available by special order. Rules include: • Full-Flexible • Spring-Tempered Key to Starrett Rule Numbering System Prefixes C Satin Chrome Finish Suffixes EM English/ Metric ME Metric/English C636MEC-500 296 P recision R ules , S traight E dges , P arallels New!