Philippi Lansbergii Beschrijvingh der vlacke sonne-wysers : in welcke de waere manier, om deselve op allerhande vlackten te betrecken, volgens wiskonstige regulen geleert, ende door een groot getal vertoog-schetzen aengewesen werdt
A 1675 Dutch treatise on sundials by Philips van Lansbergen, with additions by Jacob Mogge, printed in Middelburg by Wilhelmus Goeree for a practical audience of surveyors and craftsmen. Its plates are geometric diagrams of sundial layouts: radiating hour lines, dotted construction arcs, and projected circles, which a designer could use as clean, precise linework for dials, rays, or radial patterns.
