Thomas Malton, the elder

Thomas Malton, the elder (1726–1801) was an English architectural draughtsman and writer on geometry.

[1] In 1774 Malton published The Royal Road to Geometry; or an easy and familiar Introduction to the Mathematics, a school-book intended as an improvement on Euclid, and in 1775 A Compleat Treatise on Perspective in Theory and Practice, on the Principles of Dr. Brook Taylor.

Some of the pop-ups are activated by pulling string and form geometric shapes used to aid the reader in understanding the concept of perspective.

It came to replace the pamphlet of Joshua Kirby as the standard English work on linear perspective.

[1] Having fallen into financial difficulties in London he moved to Dublin, accompanied by his son James.

Thomas Malton the elder's Treatise on Perspective contains the first known 3-dimensional pop-up to appear in a commercially produced book.
This pop-up, as well as the others in Treatise on Perspective were used to help artists and architects understand and apply the concept of perspective to their work.