... .long-time working hours. Topcon 100N SeriesFunction:The new Topcon GTS-100N series total station combines the traditional rugged field-readyquality ... approximate battery life 9 including distance measurement,40 Angle measurement GTS-102N Series: Accuracy2,2+2ppm, Measuring Range2km/1NPGTS-105N Series ... : Accuracy5,2+2ppm, Measuring Range2km/1NP Topcon Total Station GTS-100N Series