| 摘要 |
<p>Disclosed is a timepiece construction in which the case and back cover member typically have snap-fit engagement surfaces with a polygonal plan profile composed of a plurality of circular arc surface portions having a common center point and a plurality of rectilinear surface portions connecting the circular arc surface portions together. Snapfit engagement between the surfaces is effected only at the circular arc surface portions. A sealing gasket may be interposed and compressed between a case flange and inside surface of the back cover member.</p> |
