A new processing system comprised of cold multistage forging, form-rolling and magnetic barrel polishing machines has been developed for producing a wristwatch winding-stem. The winding-stem, which has a minute diameter and long complicated shape with various grooves and threads, can be fabricated into its final shape with this processing system in about 1/8 of the time required by conventional turning and thread rolling processes. Cold multistage forging can be accomplished in just two steps. These two steps include the processes of wire shearing, backward extrusion and collar upsetting. Grooves and threads in the winding-stem can be simultaneously formed in only one step using the form-rolling machine with nat tools. The corner of the winding-stem produced with this processing svstem can be distinctly finished. The surface appearance is also smooth without large defects. Mass-production and practical application of a cheap winding-stem may now be realized as a result of this processing system.

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We present a new technique applying a multi dimensional interferometer to measure pitching and yawing motion of both a precision straightness testing machine and the kinematic mounting device. Secondly we apply this method for the calibration of this straightness testing machine using the sequential two points method by which we can separate that testing machine's own error and the reference specimen error itself. Thirdly we try to discuss about the Abbe's error concerning this testing machine. We have got these results. 1. each Pitching and Yawing motion of the precision straightness testing machine are 280nm and 120nm, 2. 70mm diameter mirror's form error is 80nm and 280mm long ground and super finished prism mirror's form error is 300nm. 3. Kinematic mounting stability effected by temperature changes is much lower than the 3-points supporting method's one applyng the roundness testing machine.

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In developing wearable human healthcare information system for monitoring muscle activities, muscle sound (MS) and mastication frequency are focused as input data since these signals are informative. Design guidelines in terms of weight are discussed, e.g. MS sensor should be less than 10gw. Developed wearable systems showed that they are available in the noisy environment such as in the train and so on.

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