The HSZ-645 is a compact zoom type stereo binocular microscope available with many options available to optimise specification for individual inspection requirements. The modular systems with a zoom ratio of 0.67x to 4.5x achieves a magnification range of 3x to 135x depending on set-up (eyepieces magnification and auxiliary lenses). A choice of base with options of universal stand type is available to meet the requirement of difficult examinations.