Queen Elizabeth Gate, Paul Sandby

Link is to zoomable image on Google Art Project; downloadable high-res file on Wikimedia Commons; original is in the Yale Center for British Art.

Gouache and watercolor on paper, roughly 14 x 18 inches (36 x 47 cm).

A wonderful effect of being precise without being stiff. Sandby appears to use wavering edges on many of his straights here, similar to those I’ve noticed in drawings by Canaletto (also here).