If the strange-looking object doesn’t immediately bring to mind a protractor — the flat ... who specializes in ancient Egyptian architecture, cites the lack of precision of the artifact ...

She suggests the object was “a protractor instrument with two scales ... of Cambridge who specialises in ancient Egyptian architecture, is not convinced and maintains the object is simply ...

While only one patent model for a protractor survives in the Smithsonian collections—from an inventor with a colorful personal history—several of the other objects also provide examples of technical ...