A guess, not an answer. You'll see what everyone else said.
Machine-generated description — written by an image model, not by a person.
Scanning electron microscope (SEM) crystal structure analysis grid, likely from the 1970s–1980s. Twelve magnified images of crystalline formations with numerical labels (e.g., 1.8, 2.9) and reference codes below. Appears in a lab setting, possibly for material science or mineralogy research.
