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一、前言正多面棱体与自准直光管配合使用,偏心调整要求不太严,是一种很容易使用的角度标准器,广泛用于检定转台等的分度误差。作商品的正多面棱体精度在5″以内,但是利用所附的检定值表,可达到0.5″～1″。正多面棱
I. INTRODUCTION Multi-faceted prisms and self-collimating light tubes are used in combination. The eccentric adjustment requirement is not very strict. It is an easy-to-use angle standardizer widely used to test the indexing error of turntables and so on. The positive polyhedron precision of the product is within 5 “, but with the attached test chart it can reach 0.5” ~ 1 "