JY-1、JY-2型轴键槽对称度检查仪是一种三点式电接触测头,用LED指示定位的新型检查仪器.1994年11月经全国形位公差标委会专家组鉴定,认为仪器具有设计原理正确、构思新颖、可靠性好、结构简单、操作方便,便于携带等特点.推荐为形位公差贯标仪器.新型轴键槽对称度检查仪获中国实用新型专利(94203641.7).仪器适用于电机、机床及其他机械制造行业.其规格及主要性能指标如下: JY-1, JY-2-type shaft keyway symmetry tester is a three-point electrical contact probe, with LED indicating the positioning of the new inspection equipment .1994 years by the National Profile tolerance Standard Committee expert identification, that the instrument has The design principle is correct, the idea is novel, the reliability is good, the structure is simple, the operation is convenient and the portable is convenient etc. It is recommended that the position-axis tolerance standardization instrument is adopted.The new-type axial keyway symmetry tester is awarded the Chinese utility model patent (94203641.7) Motors, machine tools and other machinery manufacturing industry.The specifications and main performance indicators are as follows: