Binocular tube with an inclination of 45° for greater ease of observation. Magnification 7x to 45x. Microscope Zooming ratio 6.4 : 1 Rack-Pinion focusing stroke 50 mm Eyepiece Paired : High-point eyepiece 10x with adjustment. Iris Diaphragm : 44mm - 3mm Binocular body can be rotated a full 360° and locked in any position desired. Illuminator : Top light 7W fluorescent bulb. Bottom 6V / 20W halogen bulb, both with adjustment of brightness. Jewellery clamp : Steel wire & plan jewellery clamps. The microscope share a unique sub stage bright field and dark field illuminator, an adjustable epi-illuminator and gem clamp for unsurpassed versatility in wide range of scientific and industrial application.