在没有采用路拱尺之前,做出来的路拱常有高低不平,用皮尺检查挺费劲还不准确,高点低点不易掌握。采用路拱尺后,那里高了那里低了很容易看得出来,整修时不太费劲,修出来平整美观,路拱明显,保证排水。路拱尺制法很简单用木做成(如图)。 In the absence of road arch ruler, made of the road often rugged, very hard to check with a tape measure is not accurate, high and low is not easy to grasp. After using the road arch, where the high there is low it is easy to see that the renovation is not too laborious, repair it out of the formation of beautiful, obvious road arch, to ensure drainage. Road arch method is very simple made of wood (pictured).