Physical description

Wooden cube with 8 metal screws visible on the upper and lower faces, securing sides together. The upper face of the cube is plastic. Metal apparatus, possibly brass, fixed to the upper face, All of the faces of the wooden cube, apart from the upper plastic face, have been sanded smooth and on all faces but the lower face, a finish has been applied.

Inscriptions & markings

Inscribed on upper face: “DUBILIER/LABORATORY STANDARD/CONDENSER/No. 33105845/CAPACITY 0.3µF/PATENTED”; Handwritten on paint dot on upper face: “3”