Steel Rules with Inch Gradua tions 1-144" All rules furnished with Starrett satin chrome finish, except where noted. Additional sizes and variations available by special order. Steel Rules 12" Full-Flexible Steel Rules with Inch Graduations Cat. No. EDP Length Width x Thickness Graduations Feature Remarks C304R-12* 66009 12" 1/2 x 1/64" 4R – 8ths, 16ths, Quick-Reading 32nds and 64ths C305R-12* 51348 12" 1/2 x 1/64" 5R – Quick-Reading 10ths,Aircraft Quick-Reading 100ths,32nds and 64ths C305R-12 W/SLC* 66881 With Standard Letter of Certification† C306R-12* 51353 12" 1/2 x 1/64" 6R – One Side Only – Quick-Reading 10ths (.10) Top Edge; Aircraft Quick-Reading 50ths (.02) Bottom Edge C310R-12* 56429 12" 1/2 x 1/64" 10R – Quick-Reading 32nds and 64ths One Side Only C316R-12* 51375 12" 1/2 x 1/64" 16R–Quick-Reading32nds,64ths,AircraftQuick-Reading50thsand100ths 12" Semi-Flexible Steel Rules with Inch Graduations Cat. No. EDP Length Width x Thickness Graduations Feature Remarks C303SR-12 51336 12" 1 x 1/50" 3R – Quick-Reading 10ths,Aircraft Quick-Reading 50ths,32nds and 64ths C304SRE-12 51344 12" 1 x 1/50" 4R – 8ths, 16ths, Quick-Reading 32nds and 64ths; End Graduations in 32nds Both Ends, One Side End Graduations 12" Spring-Tempered Steel Rules with Inch Graduations Cat. No. EDP Length Width x Thickness Graduations Feature Remarks C601-12 52640 12" 1 x 3/64" 1 – 10ths, 20ths, 50ths, 100ths; 12ths, 24ths, 48ths; 16ths, 32nds, 64ths; 14ths, 28ths See Note on Previous Page ** 604R-12 52647 12" 1 x 3/64" 4R – 8ths, 16ths, Quick-Reading 32nds and 64ths Regular Steel Finish C604R-12 52679 C604R-12 W/SLC 66885 With Standard Letter of Certification† C604RE-12 52661 12" 1 x 3/64" 4R – 8ths, 16ths, Quick-Reading 32nds and 64ths; End Graduations in 32nds Both Ends, One Side End Graduations H604R-12 52669 12" 1 x 3/64" 4R – 8ths, 16ths, Quick-Reading 32nds and 64ths Regular Steel Finish; With Reversible Hook CH604R-12 52674 With Reversible Hook DH604R-12 52664 Regular Steel Finish with Adjustable Double Hook CD604R-12 52666 With Adjustable Double Hook C606R-12 52653 12" 1 x 3/64" 6R – Both Sides – Aircraft Quick-Reading 50ths (.02) Both Edges, One Side; Quick-Reading 10ths (.10) Both Edges, Opposite Side C607R-12 52689 12" 1 x 3/64" 7R – 16ths,Quick-Reading 32nds,64ths,Aircraft Quick-Reading 100ths C616R-12 52702 12" 1 x 3/64" 16R – Quick-Reading 32nds,64ths,Aircraft Quick-Reading 50ths,100ths 1604R-12 53211 12" 1 x 3/64" 4R – 8ths, 16ths, Quick-Reading 32nds and 64ths Stainless Steel 610N-12* 52695 12" 3/16 x 3/64" 10 – 32nds One Side and 64ths on Reverse Side Regular Steel Finish; Narrow Rule C610N-12* 67103 Narrow Rule H610N-12* 52698 Regular Steel Finish; Narrow Rule with Hook † Includes redemption card for Standard Letter of Certification (SLC). * Indicates rules with single row of inch figures (all rules under 1" width).Rules without asterisk have double row of inch figures,and each edge represents the bottom edge reading left to right (rules 1" and wider). 290 P recision R ules , S traight E dges , P arallels