
Geometrical Product Specifications (GPS) - Series of conical tapers and taper angles
出版:Japanese Standards Association

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This Standard gives a series of cones or conical tapers, ranging from 120 degree SIGN to less than 1 degree SIGN, or ratios from 1:0.288 6 to 1:500, intended for general use in mechanical engineering. It applies only to plain conical surfaces, and excludes prismatic pieces, taper threads, bevel gears, etc. The method of dimensioning and tolerancing conical surfaces on drawings is covered in JIS B 0028.
ISO 1119:1998 - Identical