HP 5245L Nixie Counter - Part 1: The King of 1960s Frequency Meters
27:43
HP 5245L Nixie Counter - Part 2: Repairing the king of Nixie frequency meters
24:10
This Is The World's First Geared CVT and It Will Blow Your Mind - Ratio Zero Transmission
23:53
HP 115BR Divider and Clock - Part 1: The clock that once sync'ed the world
10:28
Pre-2000 Strowger selector demonstrator
22:21
A Vacuum Tube Single Board Computer?!
22:11
Failed 24V 10A power supply repair
26:04
HP 8568B 1.5 GHz Spectrum Analyzer Repair
58:12