Stereo Microscope Focus Block with 84mm Collar and 5/8in Mounting Pin, Amscope, Mfr#: FR-HGA3-84

This is a focus rack with tail for major brand stereo microscopes. It comes with a 3-1/4" (84mm) diameter of annular ring that holds microscope head. Features & Specifications: Brand new pin-tail focus rack Good for major brand stereo microscopes Focus gear with coarse focus and tension adjustment Diameter of annular ring holding microscope head: 3-14" (84mm) Diameter of the pin tail: 5/8" (16mm)Weight: 2 lbs Manufactured under ISO 9001 Quality Control Standard