Different uses, different scales, etc.
1. Different uses: Dinglan ruler is a special ruler used for making shrines, carving wooden statues, and making tablets for gods. Later, it was also used for a large number of architectural scales. Luban ruler is used in Yangzhai construction and is designed according to the direction and weather of Feng Shui theory.
2. Different scales: Dinglan ruler has large scales on the scale. The scale distinction of Luban ruler is more detailed.