In an early, simple hay tedder described in 1852 and manufactured in Edinburgh by the company of Mr. Slight, the two wheels, via a spur wheel and a pinion, drive a set of light wheels, the rake wheels; on these two rake wheels are mounted eight rakes, which pick up and disperse the hay.
It should be noted, how-ever, that only about 1 out of every 10 STEM workers has a high school diploma or less. Those with gradu-ate degrees in a STEM job earned more than $40 per hour, nearly $4.50 more per hour on average than those with non-STEM jobs.
This makes the average hourly rate $23.17 based on a 40-hour workweek. We've made a list of jobs in various industries; each position earns between $20 and $30 per hour and is experiencing job growth through 2016, based on data from the BLS. Here are 10 jobs that earn more than $20 per hour: