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.
Nationwide Phlebotomist Pay Averages. The average hourly wage in the United States for phlebotomists is $14.29. The average annual wage in the US is $30,900. That wage average is based on the 100,000 phlebotomists that work in the United States.The top 25% of phlebotomists make an average of $17.27 per hour.The top 25% make about $35,900 per year. The top 10% of phlebotomists earn $20.48 per hour and about $42,600 per year. starting pay is often going to be much different and can be as much as 25% less than a phlebotomist with 30% more experience. The average hourly wage in the United States for phlebotomists is $14.29. The average annual wage in the US is $30,900.