micrograph

From micro- +‎ -graph, perhaps by analogy with microscope and photograph.

micrograph (plural micrographs)

1. An image such as a photograph that presents the microscopic at a macroscopic scale; an image produced with a microscope.

   Hyponyms: photomicrograph (often loosely synonymous), electron micrograph

2. A pantograph instrument for executing minute writing or engraving.

micrograph (third-person singular simple present micrographs, present participle micrographing, simple past and past participle micrographed)

1. To produce such an image by micrography.