Features:

Made of all-steel material, it is and difficult to use.
The magnification is adjustable and the image is clear, making it easy to observe the texture and structure of tiny objects.
There are six objective lenses available: 4X, 10X, 20X, 40X, 60X, 100X.
Each lens is equipped with a unique plastic box for easy storage.
This product is dedicated to a variety of biological microscopes, using a standard C interface.

Specifications :
Condition: Brand New
Material: steel.
Standard: Standard C interface
Type: 4X, 10X, 20X, 40X, 60X, 100X achromatic objective lens(optional)
Magnification Numeric aperture Working distance Coverslip thickness Impregnant medium Spring 4X 0.1mm18mm0.17mmNo No 10X 0.25mm7mm0.17mmNo No 20X 0.4mm0.55mm0.17mmNo Yes 40X 0.65mm0.53mm0.17mmNo Yes 60X 0. 65mm0.13mm0.1 7mmNo Yes 100X 1.25mm 0.13mm 0.18mm Oil Yes
The use of various goals:
4X: observe insects, banknotes, repair electronic motherboards, etc. (can be seen separately) and the images are clearer than the magnifying glass.
10X: repair of fine electronic components, small antiques, etc. (can be seen separately), pictures are clearer than magnifying glass.
20X: observe aphids, aquatic products, silkworms, etc.
40X: observe cells, , eggs, artificial insemination, etc.
60X: observe cells, , eggs, artificial insemination, etc.
100X: observe medical tests, blood tests, scientific research, students see samples, etc.

Packing List:
1 x achromatic objective lens.