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    • 6. 发明授权
    • Length measuring device
    • 长度测量装置
    • US06289598B1
    • 2001-09-18
    • US09372072
    • 1999-08-11
    • Kenji Tanabe
    • Kenji Tanabe
    • G01B502
    • G01B5/02G01B3/20
    • A length measuring device is used for measuring a length of from a virtual intersection of the extension lines of two surfaces extending along the respective sides A1, A2 to ends of the respective sides of a bent member. The length measuring device is comprised of a rotary body 20 rotating about the virtual intersection as a center O and a scale body 30 having graduations (divisions). The rotary body 20 has a contacting side 20c with which one side of the bent member A is brought into contact, while the scale body 30 has a contacting side 30c with which the other side of the bent member A is brought into contact. The two contacting sides 20c, 30c are arranged on straight lines drawn through the virtual intersection.
    • 长度测量装置用于测量沿着相应侧面A1,A2延伸的两个表面的延伸线与弯曲部件的各个侧面的端部的虚拟交点的长度。 长度测量装置包括围绕作为中心O的虚拟交叉点旋转的旋转体20和具有刻度(分度)的刻度体30。 旋转体20具有与弯曲构件A的一侧接触的接触侧20c,而标尺体30具有与弯曲构件A的另一侧接触的接触侧30c。 两个接触侧20c,30c被布置在通过虚拟交叉点绘制的直线上。