Circular hardened steel or granite toolmakers' flats up to 200 mm diameter and circular cast iron or granite high precision surface plates 250 and 400 mm diameter. Material, general design, finish, accuracy, cases, packing and marking. Composition of typical steels, cast irons and heat treatment.
BS 869-1978由英国标准学会 GB-BSI 发布于 1978-01-31,并于 1978-01-31 实施。
BS 869-1978 在中国标准分类中归属于: J42 量具与量仪,在国际标准分类中归属于: 17.040.30 测量仪器仪表。
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