comparison microscope

noun

Optics.

1. a microscope having two objective lenses and using a system of prisms to form in one eyepiece adjacent images of two different objects.

Word History and Origins

Origin of comparison microscope¹

First recorded in 1935–40

Example Sentences

Using a bit of sticky wax, he attaches the crumpled slug to a slender rod suspended under his Leica comparison microscope, positioning it side-by-side with one of the bullets fired by the sniper.

From Time Magazine Archive

He put the blood-drop on a slide and inserted it at one side of a comparison microscope, nodding.

From Project Gutenberg