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steel rules
Precision rules, straight edges, Parallels
steel rules WItH IncH GrAduAtIons
1-144"
All rules furnished with Starrett satin chrome finish, except where noted. Additional sizes and variations available by special order.

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 †
6R – One Side Only – Quick-Reading 10ths (.10) Top Edge; Aircraft
C306R-12* 51353 12" 1/2 x 1/64"
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-Reading 32nds, 64ths, Aircraft Quick-Reading 50ths and 100ths
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
4R – 8ths, 16ths, Quick-Reading 32nds and 64ths; End Graduations in
C304SRE-12 51344 12" 1 x 1/50" End Graduations
32nds Both Ends, One Side
12" Spring-Tempered Steel Rules with Inch Graduations
Cat. No. EDP Length Width x Thickness Graduations Feature Remarks
1 – 10ths, 20ths, 50ths, 100ths; 12ths, 24ths, 48ths; 16ths, 32nds,
C601-12 52640 12" 1 x 3/64" See Note on Previous Page **
64ths; 14ths, 28ths
604R-12 52647 Regular Steel Finish
C604R-12 52679 12" 1 x 3/64" 4R – 8ths, 16ths, Quick-Reading 32nds and 64ths
C604R-12 W/SLC 66885 With Standard Letter of Certification †
4R – 8ths, 16ths, Quick-Reading 32nds and 64ths; End Graduations in
C604RE-12 52661 12" 1 x 3/64" End Graduations
32nds Both Ends, One Side
H604R-12 52669 Regular Steel Finish; With Reversible Hook
CH604R-12 52674 With Reversible Hook
DH604R-12 52664 12" 1 x 3/64" 4R – 8ths, 16ths, Quick-Reading 32nds and 64ths Regular Steel Finish with Adjustable Double Hook
CD604R-12 52666 With Adjustable Double Hook
6R – Both Sides – Aircraft Quick-Reading 50ths (.02) Both Edges, One
C606R-12 52653 12" 1 x 3/64"
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 Regular Steel Finish; Narrow Rule
C610N-12* 67103 12" 3/16 x 3/64" 10 – 32nds One Side and 64ths on Reverse Side 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).

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