| 摘要 |
PCT No. PCT/GB89/00345 Sec. 371 Date Oct. 5, 1990 Sec. 102(e) Date Oct. 5, 1990 PCT Filed Apr. 5, 1989 PCT Pub. No. WO89/09677 PCT Pub. Date Oct. 19, 1989.A lightweight structure for the base of a co-ordinate measuring machine is formed of a triangulated space frame arrangement using carbon fibre reinforced plastics bars (30) having a near zero coefficient of thermal expansion. The frame arrangement may be covered by a skin extending across one or more faces of the frame members to form a closed structure. |
