Microscope Specifications Observation head Trinocular observation head inclined at 45¡, rotateable through 360¡, interpupilary distance adjustment ring 54-74mm, dioptric adjustment ring on the left having adjustable dioptric scale with trinocular tube for photomicrographiccamera attachments. Main body All parts die casted to provide long life & good mechanical strength. Focussing Precise and Separate coarse and fine focusing controls