发明名称 Digital head-out level
摘要 A digital level is disclosed that includes a digital display for displaying the angle of inclination between a straight edge of a digital level and a desired reference plane. An alarm is also included to indicate whenever the digital level is held parallel to a desired reference plane, such as alevel horizontal plane, or a vertical plane. The level transducer employed within the digital level includes a rotating member that is weighted so as to always be aligned with a gravitational field in which the level is used. The body of the level includes flip-up sights so that it can readily be used as a transit. A microswitch located on the underneath side of the level automatically powers the circuitry used in connection with the sensing circuitry and digital display whenever the level is placed on a planar surface.
申请公布号 US4467527(A) 申请公布日期 1984.08.28
申请号 US19820347861 申请日期 1982.02.11
申请人 NORTH, LARRY;GOLD, BRYANT R. 发明人 NORTH, LARRY;GOLD, BRYANT R.
分类号 G01C9/06;(IPC1-7):G01C9/06 主分类号 G01C9/06
代理机构 代理人
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