Herrn Georgij Galgemairs Kurtzer gründlicher gebesserter vnnd vermehrter Vnderricht, Zubereitung vnd Gebrauch, der hochnutzlichen mathematischen Instrumenten, proportional Schregmäss vnd Circkels, benebens dem Fundament dess Visierens, allen Kunstliebenden zu sonderen Ehren vnnd Wolgefallen, von H. Georg Brentel ... new herfür geben, vnnd durch Verlag Stephani Michelspachers an Tag gebracht.
A 1615 German manual by Georg Galgemair, published at Ulm, explaining how to prepare and use proportional compasses, scale rules and the geometry of sighting for instrument makers and anyone interested in the mathematical arts. Its pictures are plain geometric diagrams of squares, circles, triangles and rectangles labelled with letters and numerals, useful to a designer for simple schematic line figures and lettered construction marks.
