Huanyu /b> Huanyu mainly provides instruments and tools. We provide voltage customized services, specific requirements can be contacted by email, we will respond promptly.After your order is confirmed, the product usually takes 7--13 business days to arrive to your hand. Features: 1. Can measure Sphere, Cylinder power, Cylinder axis, prism power and baseline direction. Can also mark the optical center of lens as well as axis and base direction of cylindrical lens. 2. Cardinal point can be adjusted by compensator. 3. Compliant with both AC and DC (2*#5 AA batteries).Note: batteries are NOT included 4. Clear graduation. High Accuracy. Easy operation. Excellent reliability. Technique Parameters : Model: NJC-4 Eyepiece Focusing: -5D ~ +5D Vertex Power Range: -20D~+20D(0.12D ) Cylindrical Axis: 0 -180° Step: 1° Prismatic Power: 5 diopters Step: 1 diopter Lens Diameter: 20- 85 mm Power Supply: DC 3 V; AC 220 V/ 110 V Friendly Reminder When purchase, please confirm the product is from our Huanyu otherwise we can't ensure the quality and after-sale service.We will try our best to provide you the best product and service, welcome to buy our product.
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