利用節距法檢定鑄鐵平板平面度方法
根據被測鑄鐵平平板的形狀、尺寸選擇布點形式，并確定各個截面的分段數及橋板跨距。
使用水平測量鑄鐵平板平面時，被測面調到大致處于水平位置；使用自準直儀測量時，被測線調到大致與儀器光軸平行。
將固有水平儀或反射鏡的橋板放在被測鑄鐵平板截面上，沿測量方向等跨距、首尾銜接地移動橋板，記取各位置讀數。
按分段檢定結果進行數據處理，求出平面度值。
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