Objective:Grouped From Any Two Objectives of 1X，2X，3X and 4X，Working Distance:90mm
Wide Field Plane-Scope Eyepiece:WF10X，WF20X（Optional）
Total Magnification:10X-20X，or 10X-30X，or 10X-40X，or 20X-30X，or 20X-40X，or 30X-40X
Articulated Free Binocular Head，Interpupillary Distance:55-75mm；45º Inclined，360º Rotatable
Stage:Ø75mm Black-white Reversible Stage Plate and Ø75mm Frosted Glass Stage Plate
Rack and Pinion Coarse Focusing Mechanism With Slip Clutch and Tension Adjustment
Illumination:Top Light-6V/20W Halogen Lamp，Bottom Light-20W Incandescent Lamp
Net Weight/Set:3kg；
Package:2 Sets/Carton48X30X38cm；
Gross Weight/Carton:9kg