| 摘要 |
A multi-function level comprising a base member (12) having a curved end (14) and a movable protractor arm (16) having a blade (18) and a circular end (20). An assembly is for pivot locking the circular end of the movable protractor arm to the curved end of the base member. A facility on the circular end of the movable protractor arm indicates angular movement. A component on the blade of the movable protractor arm indicates length measurement. A structure (28) in the curved end of the base member is for viewing the angular measurement facility on the circular end of the movable protractor arm. An element (30) in the base member is for leveling the base member.
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