BK Precision 1823A Universal Frequency Counter 2.4GHz 3-Channel

Global Specialties 4401 Frequency Standard OCXO 10 MHz Tested Working Oven Ready

Wavetek Model 905 Frequency Counter, Ham Radio, Electronic Lab equipment

HP Agilent 5335A Universal Counter 200 MHz Frequency Bench Precision Tester

HP Agilent Keysight 53181A / Opt: 010 Frequency Counter (225MHz)

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

BK B&K Precision Model 1823A 2.4GHz Universal Frequency Counter PARTS

Frequency Counter box (for 6 digits counter)