为了开展七块组角度块的生产、修理和检定工作,我们用1″自准直仪组装了一台专用测角比较仪。它能在一次装调被测件后,在测得角值的同时,将角度块工作面对底面的垂直度±2′也估测出来。比较仪的结构如图所示。自准直仪6用压板7固定在底座5上。经研磨加工,平面性在 In order to carry out the production, repair and verification work of seven groups of angle blocks, we use a 1 "self-collimator to assemble a special angle comparator, which can adjust the angular value At the same time, the angle of the work block to the bottom surface of the squareness ± 2 ’also estimated comparator structure shown in Figure 6. Autocollimator 6 with a fixed plate 7 on the base 5. After grinding, flatness in the