Quantifying the yield of Miscanthus * giganteus in the UK

In flat knitting machines, the selvage wires are prevented from laterally flexing so as to prevent lateral contraction of the knitted web as it is drawn off. In the preferred embodiment, each selvage wire extends through a guide channel in a steadying component, and fabric-guiding elements at the front of the guide channel are spaced apart to provide between them a gap which permits passage therethrough of the web margin, but which will not permit passage of the selvage wire.