Effective January 1, 2017 the minimum wage for all industries will be $10.50 per hour for employers with 26 more or more employees and shall remain at $10 per hour for employers with 25 or fewer employees. The minimum wage shall be adjusted on a yearly basis through 2023 according to the pre-set schedule shown above.
A 20 degree pressure angle allows for a smaller gear with less teeth before they begin to undercut making the base thinner than the pitch circle thickness of the tooth.
The normal angle is fifteen degrees of volar angulation (radius is tilted down a little, it allows you to reach for things on the top shelf) If the angle on your radius is tilted up in the other direction then you will lose the ability to reach for stuff on the top shelf of your kitchen cabinet.