Versatile and portable, the Aven Headband Magnifier for basic design, fabrication, and inspection apps includes four clip-on enlargement lenses and lighting choices. It's available in battery-powered models with a top-mounted LED light or 2.2V bulb. The LED model provides 50,000 hours of illumination and comes with 1.5x, 2x, 2.5x, and 3.5 lenses. The version with a center-positioned conventional light has lens powers of 1.2x, 1.8x, 2x, and 3.5x. AVEN INC., Ann Arbor, MI. (734) 973-0099.