BM-10 2.5x 10" Dome Magnifier. Our 10 inch dome shaped acrylic bar magnifier is perfect for reading reading newspaper, bills, small type this is the largest and most powerful bar magnifier available. Just place the bar magnifier down on the surface and effortlessly glide it across the surface for 2.5x magnified type,10 inch length makes this bar magnifier ideal for everyday use and to magnify a over 2 full columns of print and most larger books (Total length 9 3/4 inches)