Observation Methods: Brightfield, Simple Polarization, Oblique Illumination (incident light). Head: Trinocular, 30° inclined, rotatable 360°, ±5 dioptric adjustment on left eyepiece, interpupillary adjustment 50 – 75 mm, Fixed photo port, 50/50 ratio. Eyepieces: Plan wide field, PL 10x/22, high eyepoint Nosepiece: Quintuple revolving nosepiece, rotation on ball bearings Objectives: IOS W-PLAN MET 5x, 10x, 20x, 50x Stage: Double layer with mechanical sliding stage, size 233 x 147 mm, X-Y movement range 78 x 54 mm. Belt-drive in X direction. Vernier scale on two axes, accuracy 0.1 mm. Glass layer for sample holding. Condenser: Swing-out type condenser, sliding-in, N.A. 0.2/0.9, with centering system. Focusing: Coaxial coarse and fine focusing mechanism (graduated, 0.002 mm) with upper stop. Adjustable tension of coarse focusing knob. Transmitted Illumination: High-efficiency X-LED3 (3.6 W), manual brightness control. Köhler illumination system with field diaphragm Incident Illumination: High-efficiency X-LED8 (8 W, comparable to a 100 W halogen bulb), manual brightness control. Köhler illumination system with field and aperture diaphragms, both centrable. Oblique illumination system for relief contrast.