| 摘要 |
FIELD: jeweller's facilities; can be used in manufacture of sheet and shaped articles, in particular, ornaments and straps. SUBSTANCE: the appliance is made in the form of a flat plate with a set of marks obtained as a unit by electric discharge machining; the upper and lower inventions are made to preset scale, for example 1:1.1. EFFECT: enhanced quality. 4 cl, 3 dwg |
