Microscope OZM544C825, trino, 7-45x, HWF 10x23, incident/transmitted light, LED 3W, Camera, CMOS, 5MP, 1/2.5", USB 2.0

This refers to the magnification factor of a single microscope lens. A lens with the number 40 is referred to as a scale of 1:40 or simply a factor of 40 times. If you multiply the lens factor by the eyepiece factor, you get the magnification.

A condenser serves to ensure a uniform homogeneous illumination of the object. The Abbe condenser consists of a lens system and an adjustable diaphragm. With it, you can set the optimal contrast for the object.

Describes the position in which you look through the eyepiece, for example at 45° or straight.

The object or specimen slide is positioned and centred on this.