Optional accessories: Eyepiece WH5x,WF10x,WF15x,WF20x Auxiliary objective 0.5x,0.75x,1.5x,2x Ring fluorescent lighting ... ±5dp,The interpupillary distance is between 55-75mm 3.Zoom objective 1x-4x 4.ZTX-E series supplied with pillar style ... .Eyepiece WH5x(Φ22mm),WF10x(Φ23mm)WF15x(Φ13mm),WF20x(Φ10mm)2.Auxiliary objective 0.5x,0.75x,1.5x,2x3.Figure eyepiece:VD ...