Gnonomica fundamentalis et mechanica, worinnen ... allerhand Sonnen-Uhren ... entworfen und mitgetheilet
Gnomonica fundamentalis et mechanica is a German treatise on sundial construction by Johann Friedrich Penther, published in 1752 by Jeremias Wolff and held by the ETH-Bibliothek, aimed at instrument makers and surveyors. Its engraved plates show geometric construction diagrams of dials on plane surfaces, with precise linework, lettered reference figures, and Roman numeral hour lines radiating from a central gnomon, offering a designer strong models for clean technical schematics and radial compositions.
