日本东京大学在东芝机械公司的协助下研究成功“逐次2点平直度测量法”,可以同时测量机床和工件二者的平直度。该法是用两个并列配置的涡电流式位移计,在它们沿着位移计间的距离移动时就能完成其测量工作。而且它比传统测量法的调整要简单,不需要熟练技术,测量精度高达5～10 μ The University of Tokyo, Japan, with the assistance of Toshiba Machine Co., Ltd., successfully studied the “2-point flatness measurement”, which can measure the straightness of both the machine tool and the workpiece simultaneously. The method uses two side-by-side configuration of eddy current displacement meter, as they move along the distance between the displacement meter to complete its measurement work. And it is simpler to adjust than the traditional measurement method, does not require skilled technology, measurement accuracy up to 5 ~ 10 μ