Vintage Systron Donner 6052 Nixie Tube Frequency Counter AS-IS Power Tested

Fluke 7260A Universal Counter/Timer Frequency Counter DC-125 MHz

Goldstar FC-7102 Frequency Counter 1GHz (Never Used)

ProTek B-2000A Universal Frequency Counter, Up To 2 GHz , Tested

Vintage Systron Donner Model 6052 Frequency Counter (Tested, As-Is)

Leader LDC-822, digital frequency counter, 10Hz/80 MHz

HP 5385A 10Hz to 1GHz High-Performance Frequency Counter Power Tested

SYSTRON DONNER MODEL 6244A FREQUENCY COUNTER