Trinocular compound microscope provides high magnification for biological use and educational applications Sliding trinocular viewing head with pairs of 10x widefield and 16x widefield achromatic eyepieces and sliding head to adjust interpupillary distance, fixed 45-degree vertical inclination to reduce eye and neck strain, and 360-degree rotation capability to provide a more comprehensive view and enable sharing Forward-facing nosepiece with 4x, 10x, 40xS (spring), and 100xS (spring, oil) DIN achromatic objectives that provide color correction of magnified images; and PH10x, PH40x, and PH100x phase-contrast plan objectives for simple phase-contrast viewing Brightfield and phase-contrast, halogen illumination and 1.25 NA Abbe condenser with iris diaphragm and rack-and-pinion focus control for precise focus, clear examination, and light control Double-layer mechanical stage, with 1.0mm stage divisions, locks 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