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.
According to the May 2012 records from the Bureau of Labor Statistics, the mean annual mechanical engineer salary is $84,770. In other words, the 252,540 mechanical engineers in the United States earn a mean hourly wage of $40.75.The bottom ten percent in the occupation earn an annual salary of $52,030, while the top ten percent brings home a six-figure average salary of $121,530 each year.hose that work in scientific research and development earn an annual salary of $93,540, but those in industrial machinery manufacturing make below the average at $74,110 each year. Mechanical engineers earn the highest annual average salaries in oil and gas extraction at $128,650 annually.