LEADER LDC-822 DIGITAL FREQUENCY COUNTER 80 MHz CLEAN Vintage

Leader LDC-823S Digital Frequency Counter 250 MHz

LEADER LDC-831 DIGITAL FREQUENCY COUNTER

Mercer Electronics Model 9800 Frequency 100 MHz Multifunction Counter

BK Precision Dynascan 1851 520 MHz Frequency Counter, Powers On

Leader LDC-822 digital counter

LEADER LDC-824S DIGITAL FREQUENCY COUNTER 520Mhz (Untested, Parts/Restoration)

BK Precision 1851 520 MHz Frequency Counter Powers On