HP 5335A Universal Counter with Manual

HP Hewlett Packard 53131A Universal Counter w/ OPT 010 and H05

OEM HP/Agilent 5335A 200 MHz Universal Counter – Bench Precision Frequency/Time

HP 53131A Universal Frequency Counter/Timer 225 MHz / UNTESTED⚠️

OEM HP/Agilent 5335A 200 MHz Universal Counter – Bench Precision Frequency /Time

HP 5315A 100 MHz Universal Frequency Counter

HP/Agilent 5316A 100 MHz Universal Frequency Counter w/1 GHz Option 003 & IEEE-4

HP 5315A UNIVERSAL COUNTER - WORKING