| 摘要 |
Semi-automatic apparatus for reproducing relief images on blocks or slabs of marble, granite and the like, comprising a sensing member and a power driven working tool, as rotably interconnected about two axes at right angles to each other, said sensing member and working tool being movable along a longitudinal axis and rotable about an axis at right angles to said longitudinal axis, as carried by a head which through a piston-cylinder assembly can be raised or lowered relative to a bearing base. |
