Navigational aid
    1.
    发明授权
    Navigational aid 失效
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    公开(公告)号:US3733708A

    公开(公告)日:1973-05-22

    申请号:US3733708D

    申请日:1971-03-15

    申请人: GOODMAN C

    发明人: GOODMAN C

    IPC分类号: G06G1/00 F26B11/18 G01B5/00

    CPC分类号: G06G1/0052

    摘要: A time, speed and distance computer apparatus having a prong fixed to a surface having indicia thereon and a second prong rotatably connected to the surface so that it can pass over the indicia. The two prongs can be placed on two points on the surface of a map for instantaneous determination of the time required to travel between the two points at predetermined speeds. The apparatus may also have a compass associated therewith for use in orienting the surface of the map, or the like.

    摘要翻译: 具有固定在其上具有标记的表面的插脚的时间,速度和距离的计算机设备和可旋转地连接到该表面的第二插脚,使得其可以越过标记。 两个插脚可以放置在地图表面上的两个点上,用于瞬时确定以预定速度在两个点之间行进所需的时间。 该装置还可以具有与其相关联的罗盘,以用于定向地图的表面等。