The site of injection is usually rotated when injections are frequently given. The maximum amount of medication that can be subcutaneously injected is about 2 ml. Needles are generally 3/8 to 1 inch in length and 24 to 27 gauge.
Salary Outlook. According to the BLS, mechanical engineers earned a median salary of $82,100 in 2013. The best-paid earned about $123,340, while the lowest-paid earned less than $52,550. Industries that pay well include oil and gas extraction as well as information services.est Paying Cities for Mechanical Engineers. The highest paid in the mechanical engineer profession work in the metropolitan areas of District of Columbia, San Jose, California, and Taunton, Massachusetts.
As of May 2012, the average annual mechanical engineer salary is $84,770, which translates to a mean hourly wage of $40.75. Percentile wage estimates suggest that the lowest ten percent earns $52,030, while the top ten percent receives an average salary of $121,530.