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

Vintage REDCO RFC-50 Frequency Counter Electronics Untested

OPTOELECTRONICS OPTO-7000 FREQUENCY COUNTER - No Power cord

Simpson 7026 Universal Electronic Counter Frequency Timer Test Equipment

Heathkit IM-4100 (EIA-416) Digital Frequency Counter Ham Radio

BK Precision Dynascan Model #1801 Frequency Counter Powers Up Pre Owned

Monsanto 150A Automatic Counter Frequency Counter 5Hz–32MHz Vintage Test Equipme

KEYSIGHT/Agilent/HP 53132A 225 MHz Universal Frequency Counter OPT 10