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.
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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 |
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代理人 |
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主权项 |
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地址 |
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