【摘要】 本文介绍了子午环对度盘和读数显微镜的制造及装配的精度要求 ,叙述了低纬子午环上度盘的制造和装配中的问题 ,以及读数系统存在的问题 ,并且从这些实际情况论述了采用固定角距法测定度盘分划改正的必要性更多还原

【Abstract】 Requirements of precision in manufacturing and assembling of the graduator and the reading microscopes in the LLMC are introduced in this paper.The problems from manufacture and assemble of the circle and those existing in the reading systems are described.According to the practical situation,the necessity that the fixed-angular method is used to determine the correction of the divided lines is discussed.更多还原