Optoelectronics Handi-Counter Model 2810

Optoelectronics Handi-Counter Model 2600H

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

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

Optoelectronics LCD Handi Counter Model 3000

Optoelectronics Frequency Counter K7000 VHF UHF UNTESTED / SOLD AS PARTS/REPAIR

OPTOELECTRONICS OPTO-7000 FREQUENCY COUNTER - No Power cord

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