Microscope Type Converging Stereoscope Total Magnification 10??16?(10?eyepiece) 16??25.6?(10?eyepiece) lllumination Slit Width 0mm?11mm continuously adjustable Slit Height 1mm?11mm continuously adjustable Aperture Diameter ?9??8??5??3??2??1? ?0.2mm Slit Angle 0°?180° Slit Inclination 5°?10°?15°?20° Illumination Bulb halogen bulb 12V/50W Input Voltage 110V/220V 60/50Hz Power 60VA