Diverging from CRTs only briefly but holding steadfast to the warm, soft glow of valves, here I introduce a piece of Valve Art crafted long before Oscilloclock came into existence!

I spotted this vintage 1967 ultrasonic cleaner unit at the local Ham Fair, and it was love at first sight. Originally with a steel cabinet with peeling paint, the unit wasn’t much to look at on the outside. But after applying a copper coat to the chassis and fitting a sleek acrylic cabinet, this device simply dazzles!

Featuring not one, but two of these stunning Hitachi 3T12 transmitting valves!

Who needs a heater in winter, when you can have one of these power-hungry devices?

I bet this lovely triode, with its zirconium-plated anode and thorium-tungsten filament, really impressed the original owner of this ultrasonic cleaner…

---

Sadly, my workshop no longer had room for this historic showpiece, so with a heavy heart, I recently powered it down for the last time. However it will go to a loving new home…

Long live vintage ultrasonic cleaners!