1) Auto level gives quick and easy leveling with less effort than dumpy level.
2) It is most accurate and precise which gives least error about 0.5 to 0.8 in 5 km.
3) It is simply to use, compact in nature and easy to handle than dumpy level
4) Auto level telescope facilitates normal readings to read; which reflects inverted in some dumpy level.
5) It gives more operational comfort to surveyor.