T-Square Drawing Tool - Precision Instrument for Drafting and Architecture #4691 (License: Personal Use)

This black-and-white line illustration depicts a classic T-square, featuring a long straightedge (blade) intersected perpendicularly by a head with screw-fastened adjustment points. The head includes a thumb screw for securing the blade and finely ruled markings along both edges for accurate measurement and alignment. Commonly used in manual drafting before digital tools, it ensures perfectly horizontal lines when slid against a drafting table’s edge.

Used on architecture, engineering, and design educational pages; product listings for drafting supplies; or historical tool retrospectives. Matches user intent to learn about traditional drafting equipment or identify parts of a T-square for repair or purchase.