Delle fortificationi libri tre ...
A military engineering treatise in three books by Galasso Alghisi, published around 1570, probably in Venice, for architects and military engineers planning city defences. The four pictures are plan diagrams of star-shaped bastioned fortifications with construction lines radiating across them, plus one profile drawing of a stepped base labelled A to D; a designer could take their geometric layouts and lettered elevation as a source for angular, diagrammatic patterns.
