Technical Specifications: - VIEWING HEAD Compensation Free Trinocular head inclined at 45° IPD 48mm-75mm EYEPIECE Plan WF10×/18mm & Telescopic Eyepiece for Phase Contrast STAGE Stage Size: 170X215mm, Attachable Mechanical Stage/Ruler Three Holders OBJECTIVE Long working Distance PLAN Objectives LWDPL4X, LWDPL PH10X, LWDPL PH20X & LWDPL40X FILTER Blue, green, yellow, frosted glass ILLUMINATION LED3W, Adjustable OPTIONAL ACCESSORIES (On Extra Cost) Digital camera or CCD camera or Digital Camera with inbuilt USB Port, Image analysis software etc.