Abstract: A footpiece for locating a skier's foot on a ski, particularly a water ski, comprises a foot locating member made up of two foot locating portions. In use, one foot locating portion is fixed to the ski, whereas the other portion is slidingly located relative to the ski, the positional adjustment between the foot locating portions by the sliding displacement of the slidingly located foot locating portion permitting different sized feet of skiers to be snugly received by the foot locating member. A flexible strap engaged with the slidingly located foot locating portion permits displacement of said portion by applying tension to the strap, suitable manipulation of the strap also permitting operation of a locking means for releasably locking the slidingly located foot locating portion in desired positions.

Abstract: A chlorine generator (1) includes an electrolytic cell (2) and a transformer/rectifier unit (4). The electrolytic cell (2) has an anode (6) provided with a hood (7) and a cathode (8) located near the top of the cell (2). A conduct (11) connected to the top of the anode hood (7) has an outlet to the water (5) surrounding the cell (2). A saline anolyte (24) is provided near the anode (6) and a dilute saline catholyte (25) is joined in the region of the cathode (8). When the power supply is switched on gas (27) and caustic soda are formed at the cathode (8). Gas (28) consisting of chlorine and traces of oxygen is formed on the anode (6) by electrolysis.