发明名称 Protractor level
摘要 An apparatus for determining a proper level of an item on any surface. The apparatus comprises a frame member having a predetermined shape and formed of a predetermined material. A first LED readout is disposed in the frame member for determining a level in a vertical direction and a second LED readout is disposed in the frame member closely adjacent to the first LED readout for determining a level in a horizontal direction. There is at least at least one magnet disposed on a bottom portion of the frame member for holding the frame member against a metal surface and such frame member has a counterweight disposed therein for offsetting the weight of the LED readouts. A power means is in electrical communication with the first and the second LED readouts and is disposed in a back portion of the frame members and a switch means is disposed in the frame member and is in electrical communication with the power means and such first and second LED readouts for turning the apparatus either on or off.
申请公布号 US2008263880(A1) 申请公布日期 2008.10.30
申请号 US20080082005 申请日期 2008.04.08
申请人 HESS CHRISTOPHER L 发明人 HESS CHRISTOPHER L.
分类号 G01C9/06 主分类号 G01C9/06
代理机构 代理人
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