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在卧式光学计、测长机和万能测长仪这一类计量仪器中,都有一个可以给出多种运动的万能工作台。这个工作台是否灵活、稳定、可靠,对测量有一定的影响,检定量块时影响更大。为此,在有关技术文件中都规定了工作台调整可靠性的检定。其方法要点是:在光学计管和尾管上装上球面测帽或平面测帽,在工作台上安放一块量块,多次重复调整工作台找转折点,观察转折点的分散情况。具体规定,各技术文件并不一样,规(G)长—11—65卧式光学计检定规程中规定用球面测帽和尺寸为70～100毫米的三、四等量块检定,允差0.2微米;规(G)长—8—65测长机检定规程中规定用直径为
In the horizontal optics, length measuring machine and universal measuring instrument of this type of measuring instruments, there is a versatile table can give a variety of sports. This table is flexible, stable, reliable, have a certain impact on the measurement, the test block greater impact. To this end, in the relevant technical documents are provided for the test bench to adjust the reliability. The main points of the method are as follows: a spherical measuring cap or a flat measuring cap is mounted on the optical tube and the tail pipe, a measuring block is placed on the workbench, the worktable is repeatedly adjusted to find the turning point repeatedly, and the dispersion of the turning point is observed. Specific provisions of the technical documents are not the same, G (G) -11-65 horizontal optical test procedures specified by the spherical cap and the size of 70 to 100 mm three, four equal block test, tolerance 0.2 Micrometer; Regulation (G) -8-65 length measuring machine test procedures specified diameter