a person who locates something.
a person who determines or establishes the boundaries of land or a mining claim.
Origin of locator
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
c.1600, of persons, from Latin locator, agent noun from locare (see locate). Of things which locate, from 1902.
Online Etymology Dictionary, © 2010 Douglas Harper
An instrument or apparatus for finding the position of a foreign object in tissue.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.