Pretty easy, pretty solid smooth transition. The included user manual, while small, contains several pages of useful application information. I only gave this model 4 stars because the vertical resolution is only 1 degree since it doesn't have a vernier; as a result, its usefulness for range estimation is rather limited. The device arrived in good condition, but the well-folded plastic carrying case was damaged in transit as the relatively heavy device was not securely sealed in the case. Theβ¦