1) Objective: Grouped From Any Two Objectives of 1X, 2X, 3X and 4X,

2) Working Distance:1X-55mm, 2X-81mm, 3X-61mm, 4X-57mm

3) Wide Field Plane-Scope Eyepiece: WF10X, WF15X(Optional)

4) Total Magnification: 10X-20X, or 10X-30X, or 10X-40X, or 20X-30X, or 20X-40X, or
    30X-40X

5) Articulated Free Binocular Head, Interpupillary Distance: 55-75mm, 45 degree Inclined;

6) Illumination: 60mm Black-white Reversible Stage Plate

7) Rack and Pinion Coarse Focusing Mechanism With Slip Clutch and Tension Adjustment

8) Net Weight/Set: 1.6kg;   

9) Inner packing: 4 sets/ctn  meas: 61X35X36cm

9) Gross Weight/Carton: 8kg