December 7, 2016 NGS to replace NAVD 88 in 2022: What GNSS users need to know — Part 10 By David B. Zilkoski
November 11, 2016 Trimble introduces construction technology for small site and utility contractors By GPS World Staff
November 8, 2016 Trimble and Hilti deliver integrated solutions for construction professionals By GPS World Staff
![[FIGURE 1] New Datums: Approximate Orthometric Height Change](https://redesign.gpsworld.com/wp-content/uploads/2016/12/Fig1-datum-NGS-ortho-height-change.jpg)
