介绍了测量局部凸圆半径的一种新方法及其设计方案，该方法能直接测读圆心角大于53°的局部凸圆半径，不需要二次计算，适于生产现场使用。%New method and design for measuring the local convex circle radius are introduced. This method can directly measure the radius of local and convex circle whose central angle is bigger than 53°, without secondary calculation.
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