A few other cases and sets of drawing instruments are found in the Armed Forces History, Physical Sciences, Political Life, and Work and Industry collections at the National Museum of American History ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This 2-1/4" German silver and steel ...

Instruments like these were used by skilled draughtsmen (and women) in many drawing offices to produce engineering drawings for structures, such as bridges and building frames, at a time when computer ...

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