Reference points are specified in colors at two or more positions longitudinally spaced at a given interval on a golf club shaft and one or more positions selected from among a golfer’s head and the like. A network device located at the edge or border of a network, such as a router that is connected to another network, identifies a data flow originating within its network and directed outside the network, and having packets set with quality of service treatment values. Means are provided for exerting a clamping force on said ferrule in order to simultaneously clamp all the fluid lines. The library server will have sufficient storage capacity to maintain all of the software that may be requested by a target customer system.