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检具构造如图1,测座1联接测杆2,百分表用M6螺钉固定在测杆2上。测座前端刨成1~1.5毫米宽的平直测量刃。测量刃和测座底面经淬火、磨平至 7。将检具和垂直方框在一级平板上校对,使测量刃与方框垂直面轻轻接触调整百分表至0位即可。垂直方框材料为铸铁,相邻两边垂直度误差0.01/300,刮削至20~25点/25平方毫米。
Gage structure shown in Figure 1, the test base 1 connected to the measuring rod 2, dial indicator with M6 screws fixed on the rod 2. The front of the measuring head is planed into a straight measuring blade of 1 to 1.5 mm wide. Measuring edge and measuring seat bottom quenched, polished to 7. Place the gage and the vertical square on the primary flat to align the measurement blade with the vertical square of the square to adjust the dial gauge to zero. Vertical square frame material is cast iron, the adjacent sides of the vertical error of 0.01 / 300, scraping to 20 to 25 points / 25 square millimeters.