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.
Results from NACEâs forthcoming Spring 2015 Salary Survey show that STEM graduates tend to underestimate the going rate for their abilities. Top-Paid Social Sciences Majors at the Bachelorâs Level Among the social sciences graduates, economics majors are projected to earn starting salaries that average nearly $51,000.ngineering Dominates List of Top-Paid Majors for Class of 2013 Grads Seven of the 10 top-paid majors for Class of 2013 bachelorâs degree graduates are engineering majors, according to NACEâs January 2014 Salary Surveyâthe final report on starting salaries for the college Class of 2013.