AL500 Auto LENSOMETER Overview The AL500 incorporates all of the features you would expect in an auto lensmeter, as well as a color display, auto add-lock, built-in printer, and more. The elegant upright design fits easily into your existing workspace, while the tilting color display ensures clear glare-free viewing at any angle. Quick and accurate, the AL500 provides repeatable measurements for all lenses. Best of all, it's easy to use so there is little training required.