The Definitive Guide to Coordinate Reference Systems

Your free, easy-to-understand primer for all things CRSs.

Even for veteran surveyors, the topic of coordinate reference systems can be confounding. Concepts like “vertical datums” and “orthometric heights” can seem difficult to crack without a master’s degree in geodesy. 

But anyone who deals with topographic surveys—from the survey managers themselves to engineers and project managers—might at some point be called upon to answer questions about their site’s CRS.