Practical perspective : being a course of lessons, exhibiting easy and concise rules for drawing justly all sorts of objects : adapted to the use of schools
Practical Perspective, a 1776 London teaching manual by Henry Clarke, issued for schools and sold through Charles Nourse and John Murray. The pictures are numbered geometric plates of perspective constructions, with thin ruled lines, labelled vanishing points, horizon lines and plan and elevation views of solids. A designer could take from them the diagrammatic logic of projected cubes, pyramids and prisms, useful for layout grids, technical illustration and line-based graphics.
