Abstract: The fluid supply apparatus includes a plurality of supply lines (308), each line having an outlet control device (328) configurable to either allow or prevent fluid in the line flowing to a shared outlet conduit (326). A controller (332) sets the outlet control devices of one or more of the plurality of supply lines in accordance with the output of a monitoring device (336), which monitors the concentration of cleaning fluid passing through the outlet conduit, to control the fluid delivered by the delivery device and the one or more outlet control devices.

Abstract: A golf-swing training device consists of a base and a reference bar of variable effective length pivotably mounted thereon. The attitude of the bar defines a swing plane for reference by the golfer in controlling his swing, and the length of the bar is adjusted so as to position the contact element, at the upper end of the bar, for interception by the head of a club moving in the swing plane; the contact element is resiliently deflectable to automatically resume its normal coaxial position after being struck.

Abstract: A golf-swing training device consists of a base and a reference bar of variable effective length pivotably mounted thereon. The attitude of the bar defines a swing plane for reference by the golfer in controlling his swing, and the length of the bar is adjusted so as to position the contact element, at the upper end of the bar, for interception by the head of a club moving in the swing plane; the contact element is desirably resiliently deflectable, and cushioned.