| 摘要 |
PCT No. PCT/EP89/00314 Sec. 371 Date Jul. 24, 1990 Sec. 102(e) Date Jul. 24, 1990 PCT Filed Mar. 22, 1989 PCT Pub. No. WO89/10530 PCT Pub. Date Nov. 2, 1989.A reference master part for linear dimensions and/or geometrical and/or shape features of determined workpieces (30) comprises precision-machined surfaces having mutual spatial arrangements such as to provide known references for said dimensions, etc. For simplifying the manufacturing processes and reducing the costs, the master part is made of a support body (1; 31) of ordinary material, reference elements (7, 8; 41-46, 50, 51, 54-57, 63, 64, 70, 71), of special material for master parts, fixed in corresponding seats (4; 33-38, 58-60) of the support body, and supporting and guiding elements (63, 64, 70, 71), made of special material, fixed to the support body. During the master part manufacturing, the reference elements are adjusted and then fixed in the relevant seats.
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