The AmScope T340-DK-LED compound trinocular microscope has a pair of 10x widefield eyepieces, a reverse-mounted nosepiece with four DIN achromatic objectives, Brightfield/Darkfield (BF/DF) LED illumi tion, and a double-layer mechanical stage. The vertical trinocular port can be used as a C-Mount or 23mm photo port (camera sold separately). The Siedentopf binocular head has 48 to 75mm inter-pupillary adjustment, fixed 30-degree vertical incli tion to reduce eye and neck strain, and 360-degree rotation capability to provide a more comprehensive view and e ble sharing. Bilateral dioptric adjustment accommodates individual eye-strength differences. The reverse-mounted nosepiece has 4x, 10x, 40xS (spring), and 100xS (spring, oil) DIN achromatic objectives that combine with the eyepieces to provide color correction of magnified images. The 40xS objective is spring loaded to prevent slide damage when focusing. The 100xS spring-loaded oil objective provides increased resolution over a standard objective. A reverse-mounted nosepiece keeps objectives out of the way to prevent damage and contami tion, and to e ble more secure slide handling. A compound microscope is used for inspection and dissection of specimens when two-dimensio l images are desired.The microscope has Brightfield/Darkfield (BF/DF) illumi tion. Brightfield (BF) illumi tion allows the specimen to absorb light, resulting in a dark image on a light background, and Darkfield (DF) illumi tion reflects light off the specimen, resulting in a light image on a dark background. LED illumi tion provides bright, cool light for working with temperature-sensitive or live specimens. 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 illumi ting the specimen. The 0.7 to 0.9 NA darkfield condenser blocks the central portion of the light path to produce a darkfield image. The double-layer mechanical stage, with 1mm stage divisions, locks the slide into place and provides precise slide manipulation along the X- and Y-axis to allow coordi tes to be recorded, e bling the viewer to return to a specific location on the slide. Graduated coaxial focus control allows measurements to be taken. The e mel-coated cast-steel body is durable and resistant to stains and corrosion. SpecificationsHeadCompound trinocularTrinocular port23mm or C-MountEyepiecesWF10xObjectives4X, 10x, 40xS, 100xS (oil)StageDouble-layer MechanicalLighting configurationTransmitted (lower)Condenser1.25 NA AbbeDiaphragmIrisLight sourceLED, 3WIllumi tion typeBrightfieldPower110/220VMicroscopes are instruments used to enhance the resolution of an object or image. Types include compound, stereo, or digital. Compound microscopes use a compound optical system with an objective lens and an eyepiece. Stereo microscopes show object depth in a three-dimensio l image. Digital microscopes are used to display an image on a monitor, rather than looking through a lens. Microscopes can have monocular (one), binocular (two), or trinocular (three) eyepieces, with varying magnification abilities. Magnification ability refers to the size of an image. Resolution, also known as resolvant power, refers to the clarity of the image. The interaction between field of view (FOV), numerical aperture (NA), and working distance (WD) determines resolution. Microscopes can control magnification through a fixed focus, or through a range of adjustments. They can also utilize LED, fluorescent, and mirror light sources to help control viewing capabilities. Microscopes are widely used in education, lab research, biology, metallurgy, engineering, chemistry, manufacturing, and in the medical, forensic science, and veteri ry industries. United Scope manufactures microscopy equipment and accessories under the brand me AmScope. The company, founded in 1996, is headquartered in Irvine, CA.What's in the Box?AmScope T340 microscope with double-layer mechanical stageWF10x eyepiece, one pair4x DIN achromatic objective10x DIN achromatic objective40xS DIN achromatic objective100xS (oil) DIN achromatic objectiveBrightfield condenserDry darkfield condenserImmersion oil, one bottle(2) Color filters, blue and greenDust coverPower cord (US and Ca da standard)Instructions