... , DTM315B, DTM322A, DTM322B, DTM325A, DTM325B suits the measurement with target and prism.SPECIFICATION: ModelDTM312A,DTM312BDTM315A,DTM315BDTM322A,DTM322BDTM325A ... measuring module Coordinate measuring moduleOffset measurement moduleLaying-outMissing line measurement moduleRemote elevation measurement moduleMemory≥4,000dotsMeasuring mode Horizontal ... DTM 300 total station SURVEYOR INSTRUMENT