National 440-440PLL Series Zoom Stereo Microscopes — Dual LED Precision for Labs, Industry & Education
National 440-440PLL Series Zoom Stereo Microscopes — Dual LED Precision for Labs, Industry & Education
- 6:1 Zoom Ratio (0.75X–4.5X / 7.5X–45X): Provides smooth, continuous magnification for detailed observation, inspection, and educational use.
- Trinocular Viewing Head: Enables live image capture and seamless camera integration for digital documentation and real-time display.
- Dual LED Illumination System: Independently adjustable top and bottom lights deliver optimal brightness for both reflected and transmitted lighting modes.
- Precision Focusing with Slip-Clutch Protection: Ensures smooth, reliable adjustments while preventing mechanical wear or over-focusing.
- Ergonomic 45° Viewing Head: Designed for long-term comfort with diopter and interpupillary adjustments (55–75 mm) to suit individual users.
- Heavy-Duty All-Metal Construction: Professional gray-enamel frame with height-adjustable head, locking support collar, and anti-drift tension control for lasting stability.
- Versatile Stage Accessories: Includes frosted glass and black-and-white contrast plates, stage clips, and a blue filter for diverse sample applications.
The National 440-440PLL Series combines precision optics, dual LED illumination, and rugged construction for exceptional 3D visualization in laboratories, classrooms, and industrial inspection settings. Offering a continuous zoom range of 7.5X–45X, these microscopes deliver sharp, true-color, distortion-free imaging across a variety of specimen types.
440-440PLL (Binocular) – Designed for versatility and durability, this binocular model features dual LED illumination (top and bottom) for optimal lighting on both opaque and transparent samples. Its 45° inclined, 360° rotating head, anti-drift focus mechanism, and all-metal frame make it a dependable choice for classrooms, STEM programs, and quality-control labs.
440T-440PLL (Trinocular) – Includes a camera-ready trinocular port for simultaneous viewing and digital imaging, ideal for research, training, and documentation. It delivers the same optical precision as the binocular model while adding flexibility for photography, live display, or analysis workflows.
Both models offer 110 mm working distance, smooth rack-and-pinion focusing, and long-life LED illumination for professional-grade clarity and performance.
