JIS T5210:1985 pdfダウンロード。Dental Carborundum Points Scope This Japanese Industrial Standard specifies the dental carborundum points,hereinafter referred to as the “points” The units and numerical values given in { }in this standardRemark:are in accordance with the conventional units, and are appendedfor informative reference. Qualities The point shall have correct profile, and be free from2.1Appearanceflaws,cracks，flashes,rusts，and other defects. 2.2 EccentricityThe eccentricity of the point head, when subjected tothe test in 5,2, shall be 0,3 mm or under in its amount of eccentricity. 2.3 Falling Off When subjected to the test in 5.3, the point head shallnot fall off from the shank during operation....