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.
Bevel gears that have pitch angles of exactly 90 degrees have teeth that point outward parallel with the axis and resemble the points on a crown. That's why this type of bevel gear is called a crown gear. Miter gears are mating bevel gears with equal numbers of teeth and with axes at right angles.