A London encyclopaedia, or universal dictionary of science, art, literature and practical mechanics : comprising a popular view of the present state of knowledge : illustrated by numerous engravings, a general atlas, and appropriate diagrams
A general reference work compiled by Thomas Curtis and issued by Thomas Tegg in London in 1829, aimed at readers seeking a survey of science, art and practical mechanics. The plates are fine-line copperplate diagrams — planetary orbit schemes, eclipse and optical geometry, lettered construction figures, and drawings of quadrants, sectors and telescope mounts — usable as sparse technical linework and instrument silhouettes.
