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The is a wooden triangle ruler, an antique 1910 drafting tool.
Used for drawing straight lines and measuring angles.
Commonly used in architecture, engineering, and woodworking.
This two particular ruler1910s or 1920s and is marked and signed
Triangle rulers come in different angles, such as 30-60-90 and 45-45-90 degrees.
Made of wood, combining functionality with aesthetic appeal.
