the bathroom guy got here at 10am and said it would take 3 hours he didn't leave until 4pm he must have been using a contractor clock
the clock it seems most contractors base their time frames on that although looking like a regular clock moves at only half the time
"the bathroom guy got here at 10am and said it would take 3 hours he didn't leave until 4pm he must have been using a contractor clock" What is the definition of "contractor clock"?