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.
10%. 25%. 50%. 75%. 90%. The average salary is $74.00 per hour. The lowest 10% earn $42 per hour and those in the upper 10% earn more than $96 per hour. Annually. On an annual basis the average wage is $153,920 The lowest 10% earn less than $88,000 per year while the upper 10% earn more than $199,000 per year.These salaries are calculated as a mean or median wage.0%. 25%. 50%. 75%. 90%. The average salary is $74.00 per hour. The lowest 10% earn $42 per hour and those in the upper 10% earn more than $96 per hour. Annually. On an annual basis the average wage is $153,920 The lowest 10% earn less than $88,000 per year while the upper 10% earn more than $199,000 per year.