Macrometer vs. Micrometer

Macrometer and Micrometer Definitions
Macrometer
An instrument for determining the size or distance of inaccessible objects by means of two reflectors on a common sextant
Micrometer
A device for measuring very small distances, objects, or angles, especially one based on the rotation of a finely threaded screw.
Macrometer
An instrument for determining the size or distance of inaccessible objects by means of two reflectors on a common sextant.
Micrometer
See micron.
Micrometer
A device used to measure distance very precisely but within a limited range, especially depth, thickness, and diameter.
Micrometer
Alternative spelling of micrometre
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Micrometer
An instrument, used with a telescope or microscope, for measuring minute distances, or the apparent diameters of objects which subtend minute angles. The measurement given directly is that of the image of the object formed at the focus of the object glass.
Micrometer
Caliper for measuring small distances
Micrometer
A metric unit of length equal to one millionth of a meter