The next evolution in edging. With a dynamically adjustable drilling / grooving tool up to 30° and Briot’s Best-Fit® Technology, the Alta Evolution ensures that the lens has an exceptional finish. Edge faster and more efficiently with less noise using the Alta Evolution. The edger includes five different bevel options and 5 different grooving modes, bringing all influences under control. altas Features include: Industrial Grade Brushless Motor for fast and quiet operation. Dynamically adjustable drilling / grooving tool up to 30° Shelf Bevel to easily process high base-curve wrap frames. Four 90mm wheels that edge all materials including CR39, Polycarbonate, Trivex®, High-Index, and Glass. Integrated drilling functions including countersunk holes, notches, blind, and oblong holes. Front and backside lens curvature measurement accuracy of 50 microns. Variable chuck pressure based on lens material and coatings. Visual preview of lens before starting the roughing cycle. Front and backside safety bevel. 5 different grooving modes including Percentage, Base curve, Controlled Bevel, and Automatic. 5 different bevel program modes including Percentage, Base curve, Controlled Bevel, and Automatic.