Features: Get adjustable temple length and nose pad, this professional optical test frame ensures precise customization for accurate optometry examinations with its rotating axes and alloy construction. Engineered with high quality alloy component, this frame offers 90-99mm lens base adjustability, 5° indexed axes scale, and lightweight durability for repeated clinical use. Design for optometrists, ophthalmologists, it support Optometry professionals in conducting detailed refractive assessments and lens fittings across clinics, schools, and industrial workplaces. Ideal for eye exams, prescription verification, and patient specific adjustments, its ergonomic design simulates real glasses conditions while maintaining comfort during prolonged diagnostic. Combining clinical precise with fine construction, this optical test frame delivers reliable performances for optometry practices requiring versatile, equipment to improve Optometry correction workflows. Specifications: Component: Metal PD: 52mm/54mm/56mm/ 58mm/ 60mm/ 62mm/64mm/ 66mm/ 68mm/ 70mm Quantity: 1 Pair Package Includes: 1 Pair Optical Trial Lens Frame note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.