| SRL-10 | IET Labs | 1 | Component Testers High-Accuracy, High-Stability Resistance Standards 10 Ohm | 
                                                                    
                                        | SRL-5-D-S-2 | Lorlin | 40 | Keylock Switches 1 POLE 2 POSITIONS KEY OUT POS 1&2 | 
                                                                    
                                        | SRL-5-D-S-2-850 | Lorlin | 100 | Keylock Switches 3A 50V 2 POS KEY OUT | 
                                                                    
                                        | SRL-5-D-S-2-850 | Lorlin | 100 | Keylock Switches 3A 50V 2 POS KEY OUT | 
                                                                    
                                        | SRL-5-E-S-2 | Lorlin | 150 | Keylock Switches 2 POS KEY OUT POS 1 | 
                                                                    
                                        | SRL-5-E-S-2 | Lorlin | 150 | Keylock Switches 2 POS KEY OUT POS 1 | 
                                                                    
                                        | SRL-5-E-S-2-850 | Lorlin | 95 | Keylock Switches 3A 50V | 
                                                                    
                                        | SRL-5-E-S-2-850 | Lorlin | 95 | Keylock Switches 3A 50V | 
                                                                    
                                        | SRL-5-F-S-2 | Lorlin | 75 | Keylock Switches 1 POLE 3 POSITIONS KEY OUT POS 1-3 | 
                                                                    
                                        | SRL-5-F-S-2 | Lorlin | 75 | Keylock Switches 1 POLE 3 POSITIONS KEY OUT POS 1-3 | 
                                                                    
                                        | SRL-5-L-M-S | Lorlin | 0 | Keylock Switches 2 POLE 2 POSITIONS KEY OUT POS 1&2 | 
                                                                    
                                        | SRL-5-L-M-S | Lorlin | 0 | Keylock Switches 2 POLE 2 POSITIONS KEY OUT POS 1&2 | 
                                                                    
                                        | SRL-5-M-S-2 | Lorlin | 242 | Keylock Switches 2 POLE 2 POSITIONS KEY OUT POS 1 | 
                                                                    
                                        | SRL-5-M-S-2 | Lorlin | 242 | Keylock Switches 2 POLE 2 POSITIONS KEY OUT POS 1 |