Hans Georg Hertels ... New eröffneter geometrischer Schaw- und Mässe-Platz ...
A 1675 German surveying and measurement manual by Hans Georg Hertel, published by Andreas Holwein, offering practical geometry for measuring heights, distances and land to a working readership of surveyors and craftsmen. Its pages are numbered geometric plates of dashed sight lines, triangles and labelled points, with German annotations for rods, feet and degrees; a designer might borrow their diagrammatic clarity, dashed construction lines and scaled rules for technical infographics.
