The Simplex Mono is a single lever key with a heavy (1.4 kg) gold or palladium plated base and gold plated components. This photo shows the palladium plated base. Like the other Begali keys it is manufactured using NC machinery for absolute precision. Micro-threaded screws are used for all adjustments. The pivot uses ball bearings that are imbedded in the base, and the moving components are made of a light-weight alloy. This key uses a novel approach with a segmented lever that provides decoupling of the two sides and an exceptionally well defined neutral position. The contacts are corrosion resistant and have been tested in salty fog according to DIN 50025. The key comes with a protective dust cover.
If you come from a history of using mechanical bugs or straight keys you may find the operation of a single lever key easier than the “squeeze” mode of iambic paddles. And even if you are using a dual lever key today you may want to get this precision key for its sheer beauty and the occasional diversion to create dits and dahs in a more old-fashioned way.