This is description of this part:
Rack gear (called a "rack") of the coarse focus mechanism (macro focus) for the Wild M20 microscope by Wild Heerbrugg Switzerland.
This element transfers the rotational movement of the knobs (control knobs) into vertical movement raising and lowering the microscope arm.
Important distinction: in the Wild Heerbrugg M20 microscope, coarse focusing is achieved by movement of the microscope arm, while precise focusing is achieved by movement of the stage on which the microscope slide with the specimen is placed.
Mechanically, this rack gear is mounted exactly between the block with the knobs and the microscope arm.
What is this part needed for?
- as a service element in the form of replacing the complete assembly if exactly this element or one of its component parts is damaged in the repaired microscope
