/saɪt ˈmɛʒ.ə.mənt/

Sight measurement

noun phrase · atelier technique

How it works

The student holds a knitting needle, pencil, or wooden stick at arm's length, closes one eye, and aligns the stick with a chosen unit on the subject (the width of a nose, the height of an eye). That unit becomes the comparative measure for everything else on the subject. The student verifies each proportion by measuring it in units against the stick.

Why it works

Sight measurement converts the perceptual problem of "is this distance correct" into the measurable problem of "is this distance N units of my reference unit." The eye is trained over hundreds of measurements until it can compare distances within 2–5 percent accuracy without the stick. After that, the stick is used only to verify rather than to find.

Historical context

The technique was codified in the Bargue–Gérôme Cours de dessin (1866–1871) but predates it by centuries in the European academic tradition. Modern transmission runs through the Florence Academy of Art (Daniel Graves, 1991), Watts Atelier, and Anthony Ryder's The Artist's Complete Guide to Figure Drawing (1999).