We provide a handy system that can perform mapping and pile driving (guidance) without precise surveying. We also have a range of versatile Android controllers that can be used with GNSS receivers and total stations. They have environmental resistance that allows them to be used in all kinds of hard field environments without interrupting work, so they also improve work efficiency in the field. You can experience something that seems impossible. Why not experience the amazing performance of these compact, smart handheld measuring instruments?