... )Slit Width(mm)0~9 adjustableSlit Height(mm)1~8 adjustableSlit Angle0°~180°Slit Inclination5°,10°,15°,20 ... chooseLight Spot DiameterΦ9,Φ8,Φ5,Φ3,Φ2,Φ1,Φ0.2Filterheat absorption, grey, redfree,cobalt blueIllumination Bulb12V ... Safety StandardConform to Standard IEC601-1.Class1 Type BWhole Packing Volume0.30m3Carton Number2Total Weight51kgAccessoriesBeam SplitterCCD AdaptorTeaching Tube latest microscope