The American Congress on Surveying and Mapping or ACSM, is a international professional association representing the interests of those engaged in measuring and communicating spatial data relating to the Earth's surface. ACSM is comprised of several autonomous professional societies, namely:
- The American Association for Geodetic Surveying or AAGIS
- The Cartography and Geodetic Information Society or CAGIS
- The Geographic and Land Information Society or GLIS
- The National Society of Professional Surveyors , Inc. or NSPS
Individual members of ACSM are members of at least one of these professional societies.
ACSM's headquarters are located at 6 Montgomery Village Avenue, Suite #403, Gaithersburg, MD 20879.
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