The SMZ-160 is a professional-quality stereo microscope for industrial and educational settings. The large zoom ratio of 6:1 and a standard working distance of 100mm provide the flexibility to support a large number of potential applications while the addition of an auxiliary lens or substitute eyepieces extend the magnification up to a maximum of 180X. Additional contrast methods such as polarization microscopy and darkfield microscopy are easily performed through the addition of optional accessories. Specifications Model SMZ-160-BLED SMZ-160-BP SMZ-160-TLED SMZ-160-TP Observation tube Binocular head Binocular head Trinocular head Trinocular head Optical system Greenough Greenough Greenough Greenough Base 237x170mm 280x220mm 237x170mm 280x220mm Column/Arm Height 205mm, Ø25mm Height 221mm, Ø25mm Height 205mm, Ø25mm Height 221mm, Ø25mm Diopter adjustment On both tubes, +/- 5 diopter On both tubes, +/- 5 diopter On both tubes, +/- 5 diopter On both tubes, +/- 5 diopter Eyepieces Widefield WF10X/20mm Widefield WF10X/20mm Widefield WF10X/20mm Widefield WF10X/20mm Focus mechanism Coarse focusing system with tension adjustment Coarse focusing system with tension adjustment Coarse focusing system with tension adjustment Coarse focusing system with tension adjustment Focusing stroke 43mm 43mm 43mm 43mm Head holder For Ø 25mm column and Ø76mm head with incident illumination For Ø 25mm column and Ø76mm head For Ø 25mm column and Ø76mm head with incident illumination For Ø 25mm column and Ø76mm head with incident illumination Inclination 45° inclined 45° inclined 45° inclined 45° inclined Interpupillary distance 55-75mm 55-75mm 55-75mm 55-75mm Objectives 0.75X~4.5X 0.75X~4.5X 0.75X~4.5X 0.75X~4.5X Objectives system Zoom, ratio 6:1 Zoom, ratio 6:1 Zoom, ratio 6:1 Zoom, ratio 6:1 Stand type Pole type stand with transmitted illumination Pole type stand without illumination Pole type stand with transmitted illumination Pole type stand with transmitted illumination Standard contrast technique Brightfield Brightfield Brightfield Brightfield Working distance 100mm 100mm 100mm 100mm Transformer Internal Fixed 50:50 Internal Fixed 50:50 Accessories included Black, white and frosted stage plates and dust cover Black, white and frosted stage plates and dust cover Black, white and frosted stage plates and dust cover Black and white stage plates and dust cover Dimensions LxWxH 237x170x398mm 280x220x367mm 237x170x398mm 280x220x367mm Weight Net 3.5kg 3.2kg 3.7kg 3.4kg