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Wooden Folding Ruler or Angle Measurer

This type of measuring tool was commonly used in engineering, drafting, and woodworking, especially in the late 19th and early 20th centuries. It allowed users to measure and replicate angles accurately in construction, carpentry, and technical drawings. It may have been used by Lewis Latimer or someone in his professional circle, given his expertise in engineering and patent drafting.

Latimer Family Papers (1870-1996 ) [QPL Full Collection]