Specification for engineers' parallels-Metric units
工程师用平行线规范
发布日期:
1972-06-16
六种尺寸的A级平行板和八种尺寸的B级平行板,横截面分别为5 mm x 10 mm至30 mm x 60 mm和5 mm x 10 mm至50 mm x 100 mm。材料、表面处理、精度、标记、保护。交叉引用:BS 860BS 891:第1BS 906部分:第2BS 1133部分:第6节
Six sizes of Grade A and eight of Grade B parallels with cross sections from 5 mm x 10 mm to 30 mm x 60 mm and from 5 mm x 10 mm to 50 mm x 100 mm respectively. Material, finish, accuracy, marking, protection.Cross References:BS 860BS 891:Part 1BS 906:Part 2BS 1133:Section 6