AS B294-1970過渡
Plain setting rings for internal measuring equipment (inch series)
出版：Standards Australia
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基本信息
標準編號： AS B294-1970
標準類別：Standard
出版單位：Standards Australia
標準頁數：10
標準簡介
Covers rings for setting instruments used for precision measurement of internal diameters by two-point or three-point contact methods, in a range of diameters from 0.08 in. to 6 in. It establishes a series of blank sizes; defines material, its heat treatment and hardness; and specifies requirements for working surface with respect to finish and accuracy. Three grades of accuracy are provided for. For metric series rings see AS 1001.
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