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precIsIon rules
          Precision rules, straight edges, Parallels
               IncH GrAduAtIon styles
               1
                   First Edge: 10ths, 20ths, 50ths, 100ths



                      Second Edge: 12ths, 24ths, 48ths

                          Fourth Edge: 14ths, 28ths




                       Third Edge: 16ths, 32nds, 64ths

               3R*
                               First Edge: 32nds

                              Second Edge: 64ths

                              Fourth Edge: 10ths

                               Third Edge: 50ths
               4R*
                               First Edge: 64ths




                             Second Edge: 32nds
                               Fourth Edge: 8ths



                               Third Edge: 16ths
               5R*
                               First Edge: 10ths

                             Second Edge: 100ths

                              Fourth Edge: 32nds

                               Third Edge: 64ths

               6R*
                               First Edge: 50ths




                              Second Edge: 50ths
                              Fourth Edge: 10ths




                               Third Edge: 10ths
               *  Suffix "R" designates Quick-Reading graduations
               NOTE:  All rules under 1" in width have single row of inch figures. Rules 1" and wider have double row of inch figures, and each edge represents the bottom edge reading left to right.



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