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#height above sea level #masl #elevation #altitude #sea level comparison

🌊➡️⛰️📐

#NAVD 88 #height above sea level #vertical measurement #elevation model #surveying datum #orthometric height

⛰️🧮🗺️

#surveying #topography #elevation measurement #land survey #height above sea level #geomatics #level tool

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#height above sea level #elevation measurement #vertical distance #surveying #altitude measurement #topography