SERIES         SIZE          CENTERS            STROKE

                     S                0             .050 (1.27)          .100 (2.54)

                    S                 1             .075 (1.91)          .100 (2.54)

                    S                 2             .100 (2.54)          .160 (4.06)

                  SS               50            .050 (1.27)          .050 (1.27)

                SS               75           .075 (1.91)           .050 (1.27)      

                SS              100          .100 (2.54)           .050 (2.54)

               450               35           .035 (0.89)           .060 (1.50)

               600               25           .025 (0.76)           .060 (1.50)