Square wooden box featuring five ivory piano keys. The device has a small timber slide at the front with a central hole. Panels attached to the sides and back are covered with worn gold-coloured velvet, while the base is covered in green baize. A plaque on the top of the box reads 'The Digitorium' and lists information about the patent and manufacturer. The number '2/2681' is stamped into the wood on the front of the unit below the keys and also on the timber slide. The letters C, D, E, F and G are stamped into the front side of the wood panel above each key. The letters R, M, B, L and B are handwritten on the front of each key.