Your search query on "SQUARE D Frequency Counters" returned the following results:

SQUARE D QO115 1 Pole 15 Amp 120 V Plug-On Circuit Breaker (lot of 5) (173733365888)

SQUARE D QO115 1 Pole 15 Amp- QO120 20 Amp 120 V Plug-On Circuit Breaker 3 Each (295268190893)

GENERAC G070042 FREQUENCY METER 240V 55-65HZ SAME DAY SHIPPING (326340293577)

Square D 9050AO110DE Contact Timer 600VAC USED (225119674371)

Function Generator/Counter 0.1Hz~3MHz 10MHz Equal Accuracy Frequency Meter (256588143316)

Function Generator/Counter Frequency Meter with DC Level Adjustment Function (375658710680)

Laboratory Function Generator/Counter 0.1Hz~10MHz With DC Level Adjustment (256588146427)

Function Generator/Counter Machine with Frequency Measuring Range 0.1Hz～50MHz (375658656884)

Lab Function Generator/Counter Output Frequency 0.1Hz～20MHz Range 0.1Hz~50MHz (256588150598)