◆Observation unit: 45°tilted binocular observation unit ◆Magnification of eyepiece: 16X ◆Focal length of objective lens: F’=230mm& F’=280mm ◆Working distance:215mm&260mm ◆Magnification changer: 5-step magnification changer (0.4X，0.66X，1X，1.5X，2.5X) ◆Total magnification: 2.9X—21.7X ◆Linear field of view:11mm–84mm ◆Beam splitter: 50:50 beam-splitter ◆Total magnification of demonstrator: 2.1X – 16.4X ◆TV adapter: C-mount or 1/3˝CCD camera attachable ◆Fine focusing distance:20mm ◆Balance arm: Height and counterweight adjustable, the arm can be locked. ◆Illumination: Coaxial cold light source illumination with 15V150W halogen lamp, brightness adjustable ◆Filter: Built-in green and yellow filter ◆Stand: Short column fitted in 5-star base