Many of our storefront systems are impact tested and utilize either our MegaThermÂ®, or ThermaBond PlusÂ® thermal barrier technology to improve performance and enhance occupant comfort. All YKK AP products are manufactured, finished, and inspected for quality in our environmentally certified, state-of-the-art facility in Dublin, GA.
A milliradian, often called a mil or mrad, is an SI derived unit for angular measurement which is defined as a thousandth of a radian (0.001 radian). Mils are used in adjustment of firearm sights by adjusting the angle of the sight compared to the barrel (up, down, left or right).
mil1. 1  a unit of length equal to 0.001 of an inch (0.0254 mm), used in measuring the diameter of wires. 2  a military unit of angular measurement equal to the angle subtended by 1/6400 of a circumference. ( 3 less accurately) the angle subtended by an arc equal to 1/1000 (0.001) of the radius or distance.