... tribrachs are standard on all models. The 16,000 points data memory can store stake out coordinates and/or collected ... data in any mix.Features1.Large data memory with 16,000 points. 2.Good ... , Lay-off, Remote elevation, Offset, MLM, Area measurement. 7.Large data memory with 16,000 points.SpecificationModelDTM-112A. DTM112BDTM-115A. DTM115BDTM ...