| 3-50-S01 | 
                          | 
                        Cadmium/brass, 500u-in (12.7um) | 
                    
                    
                        | 3-50-S02 | 
                          | 
                        Cadmium/copper, 500u-in (12.7um) | 
                    
                    
                        | 3-50-S03 | 
                          | 
                        Cadmium/steel, 500u-in (12.7um) | 
                    
                    
                        | 3-50-S04 | 
                          | 
                        Chromium/brass, 200u-in (5.0um) | 
                    
                    
                        | 3-50-S05 | 
                          | 
                        Chromium/copper, 200u-in (5.0um) | 
                    
                    
                        | 3-50-S06 | 
                          | 
                        Chromium/nickel, 20u-in (0.5um)** | 
                    
                    
                        | 3-50-S07 | 
                          | 
                        Chromium/steel, 200u-in (5.0um) | 
                    
                    
                        | 3-50-S08 | 
                          | 
                        Copper/steel, 500u-in (12.7um) | 
                    
                    
                        | 3-50-S09 | 
                          | 
                        Copper/zinc, 250u-in (6.2um) | 
                    
                    
                        | 3-50-S10 | 
                          | 
                        Gold/brass, 25u-in (0.6um)** | 
                    
                    
                        | 3-50-S11 | 
                          | 
                        Gold/copper, 25u-in (0.6um)** | 
                    
                    
                        | 3-50-S12 | 
                          | 
                        Gold/nickel, 25u-in (0.6um)** | 
                    
                    
                        | 3-50-S13 | 
                          | 
                        Nickel/brass, 500u-in (12.7um) | 
                    
                    
                        | 3-50-S14 | 
                          | 
                        Nickel/copper, 500u-in (12.7um) | 
                    
                    
                        | 3-50-S15 | 
                          | 
                        Nickel/steel, 500u-in (12.7um) | 
                    
                    
                        | 3-50-E01 | 
                          | 
                        EN/steel, 200u-in (5.0um) | 
                    
                    
                        | 3-50-S16 | 
                          | 
                        Silver/brass, 500u-in (12.7um) | 
                    
                    
                        | 3-50-S17 | 
                          | 
                        Silver/copper 500u-in (12.7um) | 
                    
                    
                        | 3-50-S18 | 
                          | 
                        Silver/steel, 500u-in (12.7um) | 
                    
                    
                        | 3-50-D02 | 
                          | 
                        STEP/copper 600u-in (15.0um) | 
                    
                    
                        | 3-50-D01 | 
                          | 
                        "STEP"/steel 600u-in (15.0um) | 
                    
                    
                        | 3-50-S19 | 
                          | 
                        Tin/copper*, 500u-in (12.7um) | 
                    
                    
                        | 3-50-S20 | 
                          | 
                        Tin/brass*, 500u-in (12.7um) | 
                    
                    
                        | 3-50-S21 | 
                          | 
                        Tin/steel, 500u-in (12.7um) | 
                    
                    
                        | 3-50-S22 | 
                          | 
                        Tin/steel, 30u-in (0.8um) | 
                    
                    
                        | 3-50-S23 | 
                          | 
                        Zinc/brass, 500u-in (12.7um) | 
                    
                    
                        | 3-50-S24 | 
                          | 
                        Zinc/copper, 500u-in (12.7um) | 
                    
                    
                        | 3-50-S25 | 
                          | 
                        Zinc/steel, 500u-in (12.7um) |