To increase the maximum magnification of the Smooth-Arm Zoom Stereo Microscope (AFN-405)

 

 

 

You would remove the microscope body and then attach a microscope of the same size (φ76mm) with magnifications ranging from X0.7 to X4.5.

 

 

 

You can also attach a 0.5x auxiliary lens, similar to the NSZ-405. This allows you to maintain the same minimum magnification while increasing only the maximum magnification.