Device for measuring cross-ball distance

The invention provides a device for measuring a cross-ball distance, which comprises a measuring rod, one end of the measuring rod is connected with a zero-setting dial indicator, the other end of the measuring rod is connected with a measuring base, a measuring head of the dial indicator faces the measuring base, the measuring base is provided with a special-shaped hole, and a measuring ball is arranged in the special-shaped hole. The bottom of the measuring ball protrudes outwards relative to the bottom face of the measuring base, and a notch is formed in a corner formed by the inner side face of the measuring base and the bottom face to expose the measuring ball. The device for measuring the cross-ball distance provided by the invention can accurately and quickly measure the axial cross-ball distance from the conical surface step to the end surface of a fuel channel end part. 本发明提供了一种用于测量跨球距的装置，包括测量杆，所述测量杆的一端连接有调零的百分表，另一端连接有测量基座，所述百分表的测量头朝向所述测量基座，所述测量基座开设有异型孔，所述异型孔内设有测量球，所述测量球的底部相对于所述测量基座的底面向外凸出，所述测量基座的内侧面