本文提出了一种新的方法，多普勒外差法测量表面面形，并首次提出和制作了同步相位计。

This paper describes a new method, Doppler heterodyne measurement method of surface profile, using a simultaneous phase comparator.

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本计是针对量测电线之绝缘体厚度而设计，采取桌上型式，量表栓于基座上，不需手提，针式量夹对于畸形、管状之试料亦能精确测量。

This gauge is specially designed to measure cord insulator's thickness. It is a table type and its meter is pegged on base. Therefore, you don't need to pick it up by hands.

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