Bible Dictionaries
Macrometer

Webster's Dictionary

(n.) An instrument for determining the size or distance of inaccessible objects by means of two reflectors on a common sextant.

Bibliography Information
Webster, Noah. Entry for 'Macrometer'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​m/macrometer.html. 1828.