SIGETA MB-120 (40x-1000x) is an entry-level biological microscope, one of the most widely used school microscopes. This low, compact model with a bent metal frame fits easily on the student desk. The tube of the monocular head easily rotates 360 ° in both directions, so that the neighbors on the desk can work with the microscope alternately without getting up.
The set of microscope SIGETA MB-120 includes 3 quality lenses with achromat correction 4x, 10x, 40x) and a pair of WF-glasses of different multiplicity (10x and 25x). When working with the most powerful lens and eyepiece, the total optical magnification of the system will be 1000 times. This is enough to study stained microbiological preparations, tissues and fluids of living organisms.
A coaxial focusing unit is installed on each side of the microscope body. Image clarity is adjusted by raising and lowering the slide platform. The working distance depends on the power of the selected lens: for 4x it is 3.3 cm, for others - 0.6 cm and 0.05 cm (in ascending order of multiplicity).
The square slide platform is equipped with micrometer calipers with a wide stroke range of 4.8 cm in width and 1.4 cm in depth to avoid crushing the cover glass when focusing at high magnification. Coordinate verniers are installed along both directions for visual assessment of linear dimensions.
The MB-120 can work with slides in transmitted light: it is equipped with a lower LED backlight. The brightness of the LED illuminator is smoothly adjusted by the handle in the stand of the device; The width of the light cone can be changed manually by rotating the disc aperture under the stage. The lighting system of this model can be powered by 220V or the built-in battery. That is, the microscope and the researcher behind it are not "tied" to the socket: you can work with SIGETA MB-120 anywhere.
