Praxis Geometriae : worinnen nicht nur alle bey dem Feld-Messen vorkommende Fälle ...
A 1749 German geometry and surveying manual by Johann Friedrich Penther, published by Johann Balthasar Probst, written for land surveyors and practical students of measurement. Its plates show numbered engraved diagrams of plane figures, angle-measuring instruments, survey triangulation lines, lakes, and formal garden parterres drawn in fine black line with light grey tint, a clear model for technical diagram layouts.
