The Penny Test. There are several popular ways to check your tire tread depth. One easy way is the penny test. Simply insert a penny into your tire's tread groove with Lincoln's head upside down and facing you. If you can see all of Lincoln's head, your tread depth is less than 2/32 inch and it's time to replace your tires.
1 Hourly rates for an outside bookkeeping service run $20-$50 an hour, depending on complexity and location. 2  Usually you can hire a trained, experienced bookkeeper on a contract basis for $30-$40 an hour, but there can be a minimum monthly charge of $100-$150 for small businesses that don't require a lot of work hours. A typical salary for an in-house bookkeeper in the United States runs $30,400-$39,898 according to Salary.com. 2  The average annual pay for a bookkeeping account executive is $68,294, or $57,600 for a payroll manager, according to BookkeeperList.com.
I have worked out an hourly rate per item. Assuming I am using lower paid guys to do stuff like scraping & sanding, and higher paid guys to do stuff like fine painting, spraying, etc... Alternately I double check my numbers by looking at how much it costs me per day for 3 employees: $60 per hour x8 hours= $480.