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    • 7. 发明授权
    • Cylindrical ruler
    • 圆柱尺
    • US08875411B2
    • 2014-11-04
    • US13610239
    • 2012-09-11
    • Turki Awwad Al-Dhafiri
    • Turki Awwad Al-Dhafiri
    • G01B3/08B43L7/10B43L13/00G01B1/00E01B3/00E01B3/34B43L9/00
    • G01B3/08G01B3/26
    • The cylindrical ruler is an elongated, hollow, cylindrical tube of known diameter having an axial slit extending the length of the tube. Indicia defining a circumferential scale are disposed around one end of the tube for measuring the length of an arc. Indicia defining a ruled scale extend lengthwise down the tube adjacent the slit for measuring length and width. Since the tube has a known diameter, it may be used to measure the inner or outer diameter of a pipe, the outer diameter or radius of curvature of a cylindrical lens, etc. The tube may also be used as a drawing tool to draw arcs, circles, or rectilinear lines on a cylindrical object. Preferably, the cylindrical ruler is furnished as a plurality of cylindrical tubes of progressively increasing diameter that can telescope within each other for storage and transport in a protective case.
    • 圆柱形尺是具有已知直径的细长的中空的圆柱形管,其具有延伸管的长度的轴向狭缝。 限定圆周刻度的标记设置在管的一端以测量弧的长度。 用于测量长度和宽度,限定刻划尺的标记沿着与狭缝相邻的管子的长度方向向下延伸。 由于管具有已知的直径,所以可用于测量管的内径或外径,圆柱形透镜的外径或曲率半径等。管也可用作绘图工具来绘制弧 ,圆形或圆柱形物体上的直线。 优选地,圆柱形标尺被配置为可逐渐增大的直径的多个圆柱形管,其可彼此望远,以便在保护壳中进行存储和运输。
    • 9. 发明授权
    • Adjustable construction square
    • 可调建筑广场
    • US08375592B1
    • 2013-02-19
    • US13136439
    • 2011-07-30
    • Albert W. Holt
    • Albert W. Holt
    • B43L7/10
    • B43L7/12B43L7/14G01B3/566
    • An adjustable construction square is provided that comprising an elongated blade member and an elongated cross member. An end of the cross member has a contour, and an end of the blade member has a contour. The adjustable construction square includes a clamping jig that enables the construction square to be quickly secured into a desired angular position. The clamping jig includes a clamping device, a wedge device, and an arm that work in combination to secure the adjustable construction square in a desired position.
    • 提供了一种可调节的结构方形,其包括细长的叶片构件和细长的横向构件。 横向构件的端部具有轮廓,并且叶片构件的端部具有轮廓。 可调结构方形件包括夹紧夹具,其能够将施工方形面快速固定在所需的角度位置。 夹紧夹具包括夹紧装置,楔形装置和臂,其组合起作用以将可调节结构方形固定在期望的位置。