Leeds  & Northrup  Cat. 440 - Cat. 442 -          Cat. 446 - Cat. 448 - Cat. 450 - Cat. 451 - Model 430 Model 453 10970 - 40 2610 2650 Cat. 470 Cat. 471 8229 - 24 933 Numatron   Process Set-Point Controller Computer/Manual Station Computer Set-Point Controller Manual Station Process Indicator Digital Counter 3 Pen Chart Recorder Alarm Unit I/P Transducer Electronic D/P Transmitter Electronic Level Transmitter (Flanged) Electronic D/P Transmitter Electronic Pressure Transmitter Multiplex Switch 12 Type J T.C. Digital Indicator - Type J T.C.