AmScope Advanced Student Biological Microscope 40X-400X

The AmScope M220 monocular compound microscope has a 10x widefield eyepiece, a forward-facing nosepiece with three DIN achromatic objectives, tungsten illumination, coaxial nested coarse and fine focus, a 1. 25 NA Abbe condenser, and a mechanical stage. The monocular viewing head has a fixed 45-degree vertical inclination to reduce eye and neck strain, and 360-degree rotation capability to enable sharing. The forward-facing revolving nosepiece has 4x, 10x, and 40xS DIN achromatic objectives that provide color correction of magnified images. The 40xS objective is spring loaded to prevent damage to the slide or objective when focusing. A compound microscope is used for inspection and dissection of specimens when two-dimensional images are desired. The microscope has lower (diascopic) Brightfield illumination that transmits light up through the specimen for enhanced visibility of translucent and transparent objects. Brightfield (BF) illumination allows the specimen to absorb light, resulting in a dark image on a light background. Tungsten (incandescent) illumination provides bright light, and a rheostat controls the amount of light emanating from the lamp. The 1. 25 NA Abbe condenser can be adjusted to control the distance of the light from the stage and has an iris diaphragm to optimize the amount of light illuminating the specimen. The mechanical stage, with 1mm stage divisions, locks the slide into place and provides precise slide manipulation along the X- and Y-axis to allow coordinates to be recorded, enabling the viewer to return to a specific location on the slide. The stage is 5 x 4-1/2 inches (W x D), has a focusing range of 13/32" (10mm), and a traveling range of 2-3/4 x 3/4 inches (W x D. where W is width, the horizontal distance from left to right. D is depth, the horizontal distance from front to back). Nested coaxial coarse and fine focus eases focusing for left- and right-handed viewers, and a rack-and-pinion mechanism provides precise and secure focusin