Distance Ruler is an essential tool for opticians and eyeglass fitting. It accurately measures distance between the eyes, helping to select glasses. Made with material, the ruler is designed to withstand frequent use without deformation. With dual-sided markings, it caters to different measurement needs. Its compact size and lightweight design make it convenient to carry and use. The clear and precise markings ensure high accuracy, meeting the demands of optometry. Features -Color:Silver -Material:Aluminum -Size:17.50X2.30X0.03cm/6.88X0.90X0.01in -An essential tool for opticians and eyeglass fitting, this ruler is designed to accurately measure distance between of the eyes. -Made of material, this ruler is built to withstand frequent use and provide performance. -Featuring dual-sided markings, this ruler is versatile and can be used for a variety of optometry needs. -With compact design, this ruler is easy to carry and transport, making it a convenient tool for optometrists on-the-go. -Offering high accuracy and precision, this ruler is a must-have for optometry needs, ensuring accurate measurements. Package list: 2 x Pupillary Rulers