Princeton Applied Research 128A Lock-in Amplifier 0.5 Hz - 100 kHz

Princeton Applied Research PARSTAT 2273 Electrochemical System Potentiostat

Princeton Applied Research PAR 162 Boxcar Averager w/ 163 164 Modules & S-1 Head

EG&G Princeton Applied Research Model 5210 Dual Phase Analog Lock-In Amplifier

EG&G / Princeton Applied Research Potentiostat Galvanostat Model 263

EG&G Princeton Applied Research 162 Boxcar Averager

Princeton Applied Research PAR 120 LOCK IN AMPLIFIER- For parts/repair

EG&G Princeton Applied Research 5210 Lock-In Amplifier