Hartley Bond Determinator , S/N 2550-252, Model B-2550-101-5, Allen Bradley PLC, Bond Feed Transformer.
Hartley Controller B-1BMK2-265, 18 MK2 Control
Hartley 18MK2 Controller, Model: B-18MK2-167, S/N 18MK2-594.
HARTLEY SERIES 2500 COMPACTABILITY CONTROLS, S/N 2500-131.
Hartley Series 2500 Compactibiliy Controls.S/N 2500-130.
Hartley 18PC Control Unit, S/N 18PC-385, D-18PC-989, PLC Panel : Compactibility Unit.
Hartley Compatibility System, with Control, Compatibility Unit-MDL B-2550-101-5, S/NB-2550-263, Bond Determinator, Siemens PLC.