I cannot seem to figure out how to enter numbers for length input in either feet-Inch or fractional notation. Am I stuck always having to enter numbers in decimal notation? For example, I need to enter an offset distance of 4 feet, 3 and 3/4 inches. Why do I have to convert this distance value to decimal 51.75 equivalent? I seems obvious to me that an input of 4'3+3/4" should suffice.