Théorie nouvelle sur le mécanisme de l'artillerie ...
Dulac's Théorie nouvelle sur le mécanisme de l'artillerie, printed in Paris by Charles-Antoine Jombert in 1741, is an 18th-century French technical treatise on artillery mechanics for military engineers and gunners. Its folding plates are engraved line diagrams of arches, vaults, pulleys, cannon geometry and surveying setups, drawn with precise construction lines and lettered reference points. A designer could draw on their crisp hand-ruled geometry, arc-and-compass linework and labelled schematic clarity.
