Krohn-Hite Variable Filter Model 3550 Test Measurement Inspection Equipment US

EG&G PARC Princeton Applied Research Model 128A Lock in Amplifier .5Hz - 100kHz

Princeton Applied Research Boxcar Average 162 And 2 Gates Integrator 166’s

Vintage KH Krohn-Hite Model 3340 Filter S2

TTC T-Berd 209A T-Carrier Analyzer CLEI TIET7406AA

EG&G PAR Princeton Applied Research 5204 Lock-In Analyzer

Krohn-Hite Model 3550 Variable Filter without Power Cord

^^ PRINCETON APPLIED RESEARCH MODEL 115 WIDE BAND PRE AMPLIFIER (DPA69)