Directorivm generale vranometricvm : in quo trigonometriae logarithmicae fvndamenta, ac regulae demonstrantur, astronomicaeq[ue] supputationes ad solam ferè vulgarem additionem reducuntur : opus vtilissimum astronomis, geometris, arithmeticis, perspectiuis, architectis, praecipuè militaribus, mechanicis, geographis, nec non ipsis philosophis naturalibus

Cavalieri, Bonaventura, 1598-1647, author · 1632 · Bononiae : Typis Nicolae Tebaldini · 26 pictures

Directorivm generale vranometricvm is a 1632 Latin treatise on logarithmic trigonometry and astronomical calculation by Bonaventura Cavalieri, printed in Bologna by Nicolò Tebaldini for astronomers, geometers, architects, military engineers and geographers. Its pictures are plain black-line geometric diagrams of circles, chords, triangles and labelled letters on a ruled page, showing how lettered construction lines define angles and proofs, a model for clean schematic figures.

Trigonometry -- Early works to 1800 · Logarithms -- Early works to 1800 · Logarithms · Trigonometry

Internet Archive · Fisher - University of Toronto · Public domain (published before 1931) · More from this library