Experience precise and comfortable vision testing with this advanced Optical Trial Lens Frame, designed to meet the needs of opticians, hospitals, schools, factories, and mining enterprises. Featuring a fully adjustable pupil distance ranging from 48mm to 80mm, this lens frame ensures an accurate fit for a wide variety of users. The innovative design allows for up to four lenses to be inserted into either the left or right frame simultaneously, providing flexibility and convenience during visual acuity examinations. Key Features: · Adjustable Pupil Distance: Easily customize the pupil distance between 48mm and 80mm, with individual left or right eye adjustments from 24mm to 40mm, ensuring precise alignment for all users. · Customizable Nose Pads: The nose pads feature adjustable height (0-14mm) and tilt angle (0°-30°), enhancing comfort and fit for extended wear during examinations. · Multi-Lens Compatibility: Supports up to four lenses inserted in each frame side, allowing for versatile and efficient testing tailored to real-world requirements. · Lightweight and Ergonomic: Weighing only approximately 66.3g (2.3oz), the frame reduces pressure on the nose bridge, promoting user comfort during long testing sessions. · Comprehensive Adjustments: Includes monocular movement range of 25mm-40mm, adjustable eye height and ear height, and glasses leg adjustment from 98mm to 135mm with a maximum spacing of 200mm for a secure and personalized fit. · Precise Axis and Rotation Control: Left index plate scales from 120°-0°-135°, right index plate from 45°-180°-60°, with a 360° lens rotation capability and minimal optical-to-geometric axis deviation (≤2.5°), ensuring accurate lens positioning and measurement. · High-Quality Construction: Engineered for durability and precision, the inner frame aperture measures Φ32.5mm, accommodating a wide range of trial lenses. Specifications: · Item Type: Optical Trial Lens Frame · Pupil Distance Adjustment Range: 48-80mm (both eyes), 24-40mm (single eye) · Monocular Movement Range: 25mm-40mm · Nose Pad Adjustment: Length 0-14mm, Angle 0°-30° · Glasses Leg Adjustment Range: 98mm-135mm · Maximum Glasses Leg Spacing: 200mm · Axes Scale: Left 120°-0°-135°, Right 45°-180°-60° · Lens Rotation Degree: 360° · Optical vs. Geometric Axis Deviation: ≤2.5° · Optical Center vs. Geometric Center Difference: ≤0.5mm · Lens Displacement Relative to Frame Center: ≤0.3mm · Inner Frame Aperture: Φ32.5mm · Net Weight: Approx. 66.3g / 2.3oz Package Includes: · 1 x Optical Trial Lens Frame This Optical Trial Lens Frame combines adjustable features with lightweight design and precise measurements, making it an essential tool for professional visual acuity testing and lens fitting. Its user-friendly adjustments and durable construction ensure reliable performance and comfort for both practitioners and patients.