| 摘要 |
A tape measure reel lock with a locking slide 70 reciprocably mounted for selectively engaging internal V-shaped, angularly spaced abutments 60 of a reel drum, each abutment having a latching shoulder 64 for locking the reel with the slide against unwinding rotation and a camming shoulder 66 for automatically retracting the slide when the reel is rotated to rewind the measuring tape. <IMAGE> |
