Now Industrial quality control can be performed for all opaque materials like minerals and metal samples with ease and efficiency. The BA310Met also performs well in Educational environments for engineering and material professions, where affordability and ease-of-use are key demands. The BA310Met-T model has a Transmitted light option that allows easy handling and viewing of transparent samples and greatly increases the number of industrial applications. Optical System | Color Corrected Infinity Optical System [CCIS®] | Eyepieces | N-WF 10X/20mm, with diopter adjustment | Observation Tube | Widefield binocular 30°[F.N. 20] Widefield trinocular 30° [F.N. 20] - light distribution 100:0/20:80 Widefield trinocular 30° [F.N. 20] - light distribution 50:50 fixed, Erect image | Interpupillary Distance | 55-75mm | Nosepiece | Reversed quintuple | Focus | Coaxial movement; 30mm stroke; Fine focus with 2µm minimum increment | Condenser | N.A. 0.85; focusable and centrable | Stage | 240x140mm surface; 75x50mm movement; coaxial movement | | 300x180mm surface; 150x100mm movement; coaxial movement | Incident light | 12V/50W Halogen illuminator with external power supply; Halogen bulb exchangeable with 3W LED (4500K,6000K) | Transmitted Illumination | Built-in 6V/30W Halogen Koehler illumination; Halogen bulb exchangeable with 3W LED (4500K,6000K) | Accessory (optional) | Polarizer, Analyzer, Camera adapter (0.5X, 0.65X, 1X) | Specimen Thickness | Max. 30mm | Objective Specification: Type Magnification N.A. W.D.(mm) Plan | 5x | 0.13 | 11.5 | 10x | 0.30 | 6.8 | 20x | 0.40 | 11.1 | 50x | 0.55 | 8.2 | 100x | 0.80 | 2 | |