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.
For diametral pitch, the # means how many teeth will fit on a pitch circle of 1 diameter. For metric module, it is the arc distance x Pi along the pitch circle from one tooth to the next. So, a 16DP gear with 32 teeth has a pitch circle of exactly 2 diameter. If you straightened out the gear, the teeth would be 1/16 x Pi apart. A 2mm metric module gear with 32 teeth has a pitch circle of exactly 64mm diameter. If you straightened this gear out, the teeth would be 2mm x Pi apart. There are a gazillion other parameters and formulas for the rest of the gear form.