45mm DIN Achromatic Objective 4X 10X 40X(S) 100X(S, Oil) Wide Field Plane-Scope Eyepiece: WF10X WF16X Total Magnification: 40X-1600X Sliding trinocular Head, Interpupillary Distance: 55-75mm 30 Inclined, 360 Rotatable Double Layers Mechanical Stage: 140X155mm, Moving Range X-Y: 70X50mm 2-30mm Iris Diaphragm And 32 Filter ABBE Condenser: N. A. 1.25 Coaxial Coarse And Fine Focusing Adjustable Mechanism: 25mm Precision: 0.002mm Built-in Adjustable Brightness Halogen Lamp 6V/20W Net Weight/Set: 6.4kg Package: 1 Set/Carton 38X34X50cm Gross Weight/Carton: 11kg