601996 Series high-magnification zoom monocular video microscopes have four types, 601996BT, 601996BTC, 601996T, 601996TC. They are characterized by high-magnification, high-resolution, and are finished video displaying and eyepieces observing at the same time(601996BT, 601996BTC are observed with both eyes). The image is invertion by 601996BT and 601996BTC observing, however, the images of 601996T and 601996TC are erecting images. 601996BTC, 601996TC contain the coaxial illumination. It is particularly suitable for checking-up, measuring the section of fibre, LCD and the other microscopic surface.