| 摘要 |
<p>PURPOSE:To remarkably improve the use convenience by providing an angle position adjusting mechanism for changing a displacement detector unit to an optional turning angle position, and holding it. CONSTITUTION:In case how to stretch an arm of a user is natural and a holding angle of the user against a case 14 is an angle alpha, a displacement detector unit 18 is turned by an angle position adjusting mechanism 23 with regard to its angle 3a portion, and locked in its angle position. Also, in this holding state, the case 14 is held obliquely a little. When it is desired to displace an instruction mark M of a display device 12, for instance, in the direction as indicated with an arrow X0, from said state, when the case 14 is brought to a moving operation in its direction, namely, in the direction as indicated with an arrow X, it conforms with its moving direction, and the instruction mark M on both faces of the display device 12 is displaced and designated to an optional position.</p> |
