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介绍了一种新的旋间隙测量仪，它由双斜块测头，光栅测长系统，数显箱组成。直接显示测得的旋压间隙值。
A new rotary gap measuring instrument is introduced, which consists of a double oblique probe, a grating length measuring system and a digital display box. The measured spin-on clearance value is displayed directly.