This microscope objective lens provides reliable optical performance and flexible mounting for laboratory and inspection work. Key benefits Multiple magnification options: includes 4X and 20X settings for low and medium power observation, with an additional magnification position for flexible use. Clearer, brighter images: advanced antireflection coating reduces surface reflections and improves contrast, making fine details easier to see. Accurate color and detail: achromatic design minimizes chromatic aberration across the visible spectrum for truer color reproduction and sharper images. Broad compatibility: standardized 2mm RMS thread enables easy installation on a wide range of microscopes and optical setups. Practical performance: suitable for repeated use in teaching, inspection, and research environments where dependable optics are needed. Features and specifications Function: objective lens for microscopy, providing magnification and image formation. Magnification: 4X and 20X included, plus an additional magnification position for intermediate needs. Coating: antireflection optical coating for improved brightness and contrast. Optical design: achromatic elements to reduce color fringing and improve focus across wavelengths. Mount size: standard 2mm RMS thread for compatibility with many microscope turrets and adapters. Typical use scenarios Teaching and training: classroom microscopes for demonstrating specimen structure at multiple magnifications. Industrial and electronics inspection: routine examination of circuit boards, solder joints, and component alignment where clear contrast and color accuracy matter. Laboratory observation and documentation: general research and quality control tasks that require consistent optical performance and simple interchangeability. Compatibility note Designed to fit microscopes and mounts that accept a 2mm RMS threaded objective. This objective lens is intended for users who need dependable magnification options, improved image contrast, and standardized mounting for flexible use across microscopes and inspection equipment.