The focus support structure is one of the structural elements of the stereomicroscope, which fastens the microscope head to the stand. By rotating the coaxial buttons, the microscope head can be focused on the object to be examined.

The MAGUS FM3 focus holder provides coarse and fine focusing. Fine focusing makes work easier at magnification above 40x.
Used to mount MAGUS Stereo 7BH, Stereo 7TH, Stereo 8BH and Stereo 8TH microscope heads on MAGUS UT1, UT2 and UT3 stands.
MAGUS UT1 and UT3 stands require an additional MAGUS P32 mounting pin.

- Installation hole diameter, mm 32
- Diameter of microscope head, mm 76
- Distance between opening centers, mm 155
- Focusing movement range, mm 45
- Fine focus adjustment scale value, μm 2