| 摘要 |
A dual mode rule assembly includes a housing, a reel, an rule connected to the reel, a spring system to wind the rule around the reel, a mode selector structure manual movable between first mode and second mode positions, and a manually releasable spring-biased brake assembly operatively associated with the mode selector structure. When the mode selector structure is in the first mode position, the brake assembly enables controlled retraction of the rule toward and into the housing containing position under bias of the spring system after the rule has been manually moved outwardly from the housing by the manual release of the brake assembly. When the mode selector structure is in the second mode position, the brake assembly allows uncontrolled retraction of the rule toward and into the housing containing position under bias of the spring system after the rule has been manually moved outwardly from the housing.
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