Our parking lot protractor is an excellent tool to set your initial angle before stall layout. It's 180 degree gauge with 5 degree increments makes it easy to set up your angles. The parking lot protractor's open length is 7'-5". Parking lot protractors allow for fast and accurate layouts by measuring quick and easy angles. QUANTITY DISCOUNTS ARE AVAILABLE and start at just 6 units. Please call 1-866-284-1541 for quotes.