抄録
An interference comparator has been constructed on the basis of theoretical investigation, some results of the investigation were already described in the first part of this paper and the rest are here presented.
A pair of interference fringes, having uniform brightness and phase difference of π/2 rad. is formed in the same field of view by means of a quarter wave lengh prism analogous to a Fresnel. rhomb and they are separated by a Wollaston prism. The direction in which the measuring head moves can be electronically detected from the phase relation between them. Measurement can be performed with in the accuracy of 0.03μ with this instrument.
