Depressed sheet metal with threaded hole at the centre of one of the shorter sides for the 12.5mm (dia.) x 500 mm (long) mild steel, nickel plated rod with one end threaded with shoulder ensures straight vertical, upright fit on base. Reduced diameter at threaded portion enabling rod to sit flat on base. Rounded top and provided with a through hole just above shoulder to permit insertion of tommy bar for tightening rods to base.