Farmers and fencing contractors who build fences for a living will tell you that you can't find a better post driver than a Shaver. Shaver's professional-grade post drivers are engineered for the most demanding jobs, from tough soil conditions to tricky side hills to having the ability to drive a wide variety of post types. In fact, you won't find another company that has spent more time engineering the best post driver in the industry. How do we know?
High-Definition Progessive Lenses enlarge the effective area of optimal acuity. HD Lenses will increase your field of vision by up to 30% compared to conventional progressive lenses. HD Lenses achieve never before possible clarity, even if gazing upward, downward, or side to side. Lens distortion is also reduced by up to 20% o.
Observing how progressive lenses are made and how they work is a great way to examine the unique characteristics of each. 1  Traditional progressive lenses. This type of lenses uses a semi-finished lens that is molded with no cylinder (spherical power) on the front. Instead, the spherical power is added to the backside. However, this type of progressive lens is becoming obsolete, because it isnât as accurate as other options now available.