Abstract: A plating barrel is constructed of a perforated cylindrical side section clamped between a pair of end plates. The end plates are provided with positioning grooves that receive edge portions of the side section. Each end plate includes a plurality of concentric grooves so that the same end plates may be used with side sections of different diameters. The barrel is rotatably mounted on a support disposed within a seamless tank containing a plating bath. The support has adjustable upstanding arms which rotatably support the barrel and permit the height thereof to be adjusted for controlling the extent to which the barrel is immersed in the plating bath, with such adjustment being dictated in part by the extent of the areas to be plated and the number of work pieces in the barrel.