This is a three phase meter meaning it may have been used at the Ballarat School of Mines or a commercial building. Homes are only one phase meters. It would have been attached to the wall - possibly within a box. The rods on the bottom would be the securing points - these are removable.Black base on 6 long screw in rods - removable. These used to attach meter to wall or box. Glass sides (longer sides missing) Three phase watt-hour meterBlack plate on front with full details and makers information.three phase meter, polyphase meter, metropolitan vickers, united kingdom, commercial use, screw-in rods