Heathkit IM-2410 Digital Frequency Counter

Used Radio Shack LCD Radio Frequency Counter Cat No. 22-305

Heathkit IM-2400 Frequency Counter LED 50/500MHz POOR CONDITION BATTERY CORRODED

Vintage REDCO RFC-50 Frequency Counter Electronics Untested

Vintage HealthKit SM-128B Frequency Counter Powers On (Untested)

Vintage Digitron Frequency Counter 6550 USA - Untested As Is

DataScan MODEL C1400 10HZ-1..4GHZ FREQUENCY COUNTER * Untested

OPTOELECTRONICS OPTO-7000 FREQUENCY COUNTER - No Power cord