| 摘要 |
It allows better ergonomics, higher work speed and higher accuracy. It comprises a T-shaped levelling member (3), a wedge (4) and a first actuation member (5); the levelling member comprising a flat base (6) and a second flat member (8) perpendicular to the base (6) and having a first opening (12), for inserting the wedge (4), and end notches (17); the wedge (4) comprising a settling surface (18), a working surface (19), for tracting the second member (8), and blocking saw-teeth grooves (20); and the first actuation member (5) comprising: a support (22), having a handle (25) and a graduated scale (26); a third support member (23), comprising a guide (30) and first legs (41) having a second opening (33); and a pusher (24), articulated with the support (22) and having a first gripping portion (36) and a second pushing portion (37). |
