VTG MONSANTO MODEL 100A COUNTER-TIMER 20watts 115/230V 50-400Hz 560A525

Simpson 2725A Nixie Tube Electronic Counter

Monsanto Electronics Model 100B Counter-Timer Display Part/repair As Is

Vintage Beckman 6230 EPUT Meter Nixie Tube Frequency Counter 1960s Powers On @18

HP 5340A Microwave Frequency Counter 10Hz-18GHz Tested Working Vintage Rackmount

Digital Counter TSA 6636/3M Nixie Tube Frequency Counter Sparenor Repair

Pristine Vintage Conar Model 202 Frequency Counter Kit No Leads Untested