Eyepieces magnification 12.5x, pupil distance adjustable range 55mm~75mm, diopter adjustment range +6D ~ -6D. Focus of second object lens 125mm. Binocular tube high brightness 45°binocular tube Magnification manual 3-step changer, total magnification 6x,10x,16x; field of view Φ34mm,Φ20mm,Φ13mm Coaxial assistant's binocular tube manual 3-step changer, total magnification 6x,10x,16x; field of view Φ34mm,Φ20mm,Φ13mm Coaxial illumination illumination diameter of light spot Φ50mm, illumination intensity 60000lux Objectives f200mm(175mm, 250mm etc ) Focusing motorized, range +/-25mm, speed 33s/whole distance X-Y translator move in X-Y direction motorised, range +/-30mm Maximum length of arm 1100mm New stand swing angle of the carrier arm 0 ~300°,height from objective to floor 800mm<H<1250mm Foot switch waterproof, 6 function steps Weight 115kg