Product 4/22 Lithco Swing Base Loupe 12x $59.00 The best at a very attractive price. The Lithco Swing-Base Magnifier (Extra-Wide Field) is a favorite among serious pre-press professionals. It features a color-corrected, achromatic lens with adustable, locking focus ring. Ample, hands-free working space . Three -element , color-corrected, flat-field lens design with anti-reflection coating for sharp, high contrast images. Long eye relief produces a clear, sharp image as much as 18 inches above the lens.