Ref. : 586 000
Production Date : 1982 [first documented appearance I can confirm]
This ultrasonic cleaning unit was a « must have » for every serious studio back in the early 1980’s. It was considered a very futuristic tool restricted to highly skilled operators, a junior like me was not allowed to touch it! Operating at 40 kHz frequency it was designed for cleaning Rotring’s nibs, plotter points and other small component parts. The main cylinder is 15,5 cm high and 9,5cm diameter. The weak point of this unit is the very un-deep cleaning area, allowing only a few parts to be cleaned at one time.
I guess Rotring sub-contract this product from a third-party manufacturer, but anyway the build quality is top-notch. The device is quite heavy, the brushed aluminium is robust and the electrical arrangement seems quite reliable. I purchased this unit second-hand and it come « naked », no manual, no box… so I can’t tell much about the specifications except for the identification sticker found on the bottom and pictured below.
Although almost 40 years-old, my unit works perfectly well, and provide a very good ultrasonic cleaning similar to more modern devices. Having no cap it’s a bit noisy, but nothing really serious. Back in the days, the price tag of this unit was outrageously expensive. In 1982, Rotring sold it for 467 Deutsche Marks, which is roughly 240 Euros (265 USD). A similar device can be found today for around 30 / 40 USD!! This must surely explain why it’s not very easy to find one today.