The perfect visual aid for office, home, workshop, or craft room. Hands-free magnification improves vision and increases your efficiency. Visor can be worn over prescription or safety glasses, and can tilt up for normal viewing. Precision optical grade acrylic lenses in 3 strengths are included: 1 3/4x at 14 in.; 2x at 10 in., and 2 1/2x at 8 in. Excellent for model-making, needlepoint, jewelry, stamp and coin collecting, painting or drawing, and more.