As shown in the Publication Manual (p. 96), the word datum is singular, and the word data is plural. Plural nouns take plural verbs, so data should be followed by a plural verb. … Keep in mind that most of the time the plural form data should be used. WhatRead More →

In engineering and drafting, a datum is a reference point, surface, or axis on an object against which measurements are made. … A typical datum reference frame is made up of three planes. For example, the three planes could be one “face side” and two “datum edges”. What is aRead More →