Patent ID: 8857794

Claim:
A mechanical trimming device comprising: an adjustable screw; a first body having at least one threaded through hole that rotatably partly encloses said adjustable screw; a movable second body that is movable relative to said first body and has a cavity into said second body, wherein said cavity accommodates a proximal end of said screw when said second body is laid against said first body; at least one disc member having a center and an outer edge and being positioned between said first and said second bodies, wherein said cavity is facing said disc member and has an edge lying inside of said outer edge of said disc member so that said outer edge of said disc member lies between said first and said second body; wherein said screw, when adjusted, can raise said center of said disc member in that said disc member works as a lever having a first distributed contact point against said cavity edge of said second body and a second distributed contact point along said outer edge of said disc member against the surface of said first body, wherein said first body is moved in an axial direction of said screw with a substantially smaller motion than said screw.