FS/BLACK Coarse Focus Block/Holder is a black tilting focus holder with integral, adjustable illuminator port. It has a rack and pinion mount allows smooth, precise focusing over 55mm of travel. Coarse focus mechanism incorporates a slip clutch and tension adjustment.

Uses 15.8mm (5/8") diameter, 34.5mm long mounting pin. The 84.2mm diameter opening accepts all EM Series stereo bodies.

Focusing holders hold the microscope body and contain the mechanism that raises or lowers the body to focus on the specimen. Complete stands include their own focusing holders. But for other kinds of tasks, however, it may be necessary to mount the microscope body on a boom arm stand or directly onto a machine or some other surface. The focusing holders below offer a range of options for such applications.