| 摘要 |
<p>A tape measure reel lock with a locking slide reciprocably mounted for selectively engaging internal V-shaped, angularly spaced abutments of a reel drum, each abutment having a latching shoulder for locking the reel with the slide against unwinding rotation and a camming shoulder for automatically retracting the slide when the reel is rotated to rewind the measuring tape.</p> |
