Carson LumiLoupe Plus 6X Power, 11.5X Power or 17.5X Power Focusable Stand Loupe Magnifiers (LO-06, LO-10, LL-15) 17.5x Power Magnification with Dual Lens Focusing Knob | Item Dimensions: 2.0 inch (L) x 2.0 inch (W) x 1.8 inch (H) Contains Dual Lens Element For Higher Magnification and Less Distortion | Lens Diameter: 0.75 inches Great for examining intricate details for film negatives, coins, currency, stamps, printing, photography, miniatures, etc. Focusing ability allows users to achieve a super sharp image at multiple distances | The crystal clear, acrylic lens system allows ambient light to pass through for the brightest and sharpest image possible Backed by Carson's Limited Lifetime Warranty