Life and work at the Great pyramid during the months of January, February, March, and April, A.D. 1865 with a discussion of the facts ascertained
A survey account by the Astronomer Royal for Scotland, C. Piazzi Smyth, published in Edinburgh in 1867, recording his measurements and investigations inside and around the Great Pyramid of Giza in early 1865. The plates are engraved technical drawings: cross-sections of pyramid courses, a plan of the base with compass bearings, and an isometric view of a passage. Their clean hatching, labelled lettering and scale bars suggest a designer could borrow the diagrammatic style for architectural cutaways, plans and scientific infographics.
