optoelectronics frequency counter

Optoelectronics Frequency Counter 3000A 10hz- 3ghz Dual Input Untested

Optoelectronics Handi-Counter Model 2810

Optoelectronics Opto 3000A Micro Handi Frequency Counter, 10hz - 3 Ghz

Vintage REDCO RFC-50 Frequency Counter Electronics Untested

OPTOELECTRONICS MINI COUNTER MODEL 3300 As Is untested Free shipping

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

Startech ATH Series Portable Pocket Frequency Counter 5 Hz to 2.8GHz