datum plane

datum level or datum line

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noun

surveying the horizontal plane from which heights and depths are calculated

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His boss, whom he admires, is waiting to meet with him about the big project.

His boss, who he admires, is waiting to meet with him about the big project.

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Words nearby datum plane

datolite, Datong, datu, Datuk, datum, datum plane, datura, DATV, dau., daub, daube

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

How to use datum plane in a sentence

Usually the contour has labeled on it in figures the height above some starting point, called the datum plane—generally sea level.
Manual for Noncommissioned Officers and Privates of Cavalry of the Army|War Department.
The contours on maps are always numbered, the number of each showing its height above some plane called a datum plane.
Manual of Military Training|James A. Moss
In all maps that are to be contoured some plane, called the datum plane, must be used to which all contours are referred.
Manual of Military Training|James A. Moss
A datum plane, or reference surface, from which all elevations are measured up to the ground surface must be assumed.
The Boy Mechanic, Book 2|Various

C, at 100 ft., or greater if necessary to place the datum plane below the ground level at all points within the area to be mapped.
The Boy Mechanic, Book 2|Various