Heathkit IM-2410 Digital Frequency Counter

EIP Phase Matrix Model 548B CW Microwave Frequency Counter 26.5 GHz

Vintage REDCO RFC-50 Frequency Counter Electronics Untested

Victor VC3165 High Resolution Counter 0.01 Hz to 2.4 GHz

HP Agilent Keysight 53132A Universal Frequency Counter 12 DIGIT

OPTOELECTRONICS OPTO-7000 FREQUENCY COUNTER - No Power cord

Simpson 7026 Universal Electronic Counter Frequency Timer Test Equipment

Microprocessor-controlled Digital Frequency Counter GWINSTEK GFC-8270H Used