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2. Jackson cross cylinder - Wikipedia

   en.wikipedia.org/wiki/Jackson_cross_cylinder

   Jackson cross cylinder of +/- 0.25 diopter. Jackson cross cylinder is a single low power lens, which is a combination of a plus cylinder and a minus cylinder of equal power with axis perpendicular to each other, with a handle placed between the two axes at 45 degrees.

3. AC Lens - Wikipedia

   en.wikipedia.org/wiki/AC_Lens

   AC Lens has been named to the INC. 5000 [5] and the Columbus Business First Fast 50. [6] In May 2010, CEO Peter Clarkson was named a finalist for the Ernst & Young Entrepreneur of the Year Award [7] for south central Ohio and Kentucky.

4. Wheel alignment - Wikipedia

   en.wikipedia.org/wiki/Wheel_alignment

   Camber is the angle which the vertical axis of the wheel makes with the vertical axis of the vehicle. This angle is very important for the cornering performance of the vehicles. Generally, a Camber around 0.5-2 degrees is given on the vehicles. Depending upon wheel orientation, Camber can be of three types. 1. Positive Camber

5. Girl, 7, heard begging her father not to kill her before cops ...

   www.aol.com/girl-7-heard-begging-her-140850655.html

   911 audio revealed the horrifying moment Oaklynn Alexander, 7, begged her father not to shoot her during a standoff with cops. Instagram / Ashley Matthews

6. Astigmatism (optical systems) - Wikipedia

   en.wikipedia.org/wiki/Astigmatism_(optical_systems)

   In third-order astigmatism, the tangential rays (in the tangential plane) and sagittal rays (in the sagittal plane) form foci at different distances along the optic axis. These foci are called the tangent focus and sagittal focus, respectively. In the presence of astigmatism, an off-axis point on the object is not sharply imaged by the optical ...

7. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!