ABSTRACT
There are currently three basic instrument types used for the measurement of skin friction: the sled, the spinning drum or spool, and the rotating disk. Static friction, a measurement of the resistance to slipping between the probe and the measurement area, may be accomplished with all three types. The Measurement Technologies skin friction instrument is a rotating disk instrument and consists of three main parts: a probe unit, a stationary shell, and a rotary position transducer. The instrument is designed to be hand held; and for maximum flexibility, is connected to its electronic controller by a six foot cable. For hand-held use, the following design innovations are used to control application pressure. The measurement head may be mounted on a counter weighted beam or arm to achieve a more constant and precise application pressure.
