middle school monocular biological microscopes

45mm DIN Achromatic Objective：4X，10X，40X(S)
Wide Field Plane-Scope Eyepiece：WF10X；
Total Magnification：40X-400X
Monocular Head，45º Inclined，360º Rotatable
Plain Stage With Paired Clips：110X120mm
Five-stop Dial Diaphragm；
Single Lens Condenser：N.A. 0.65
Separated Coarse And Fine Focusing Adjustable Mechanism：12mm/2mm
Built-in Incandescent Lamp 20W（or Halogen, or Fluorescent, or LED）
Net Weight/Set：2.9kg；
Package：4 Sets/Carton 54X37X42cm；
Gross Weight/Carton：15kg