PRECISION STEEL RULES C303R-6 C304SRE-12 C303R, C306R, C309R, C310R STEEL RULES WITH INCH GRADUATIONS All rules furnished with Starrett satin chrome finish. Fea tures • Full-Flexible • Semi-Flexible • Spring-tempered • Heavy spring-tempered Cat. No. EDP Length Width x Thickness Graduation Feature Remarks C303R-6* 51334 6" 1/2" x 1/64" 3R – Quick-Reading 10ths, Aircraft Quick-Reading 50ths, 32nds and 64ths Full-Flexible C304R-6* 66008 6" 4R – 8ths, 16ths, Quick-Reading 32nds and 64ths C304SRE-6* 51343 6" 3/4" x 1/50" 4R – 8ths, 16ths, Quick-Reading 32nds and 64ths; End Graduations in 32nds Both Ends, One Side Semi-Flexible C305R-6* 51347 6" 1/2" x 1/64" 5R – Quick-Reading 10ths, Aircraft Quick-Reading 100ths, 32nds and 64ths Full-Flexible C316R-6* 51374 6" 16R – Quick-Reading 32nds, 64ths, Aircraft Quick-Reading 50ths and 100ths C303SR-12 51336 12" 1" x 1/50" 3R – Quick-Reading 10ths, Aircraft Quick-Reading 50ths, 32nds and 64ths Semi-Flexible C304SRE-12 51344 12" 4R – 8ths, 16ths, Quick-Reading 32nds and 64ths; End Graduations in 32nds Both Ends, One Side C305R-12* 51348 12" 1/2" x 1/64" 5R – Quick-Reading 10ths, Aircraft Quick-Reading 100ths, 32nds and 64ths Full-Flexible * Indicates rules with single row of inch figures (all rules under 1" width) 103 starrett.com R ules and S quares