ction of the motions the various means that have been employed in the ap- measuring angles in the early times a device known as of the planets by the astronomers and astrologers of plication of this science to every-day life. From the a cross staff was used, where a movable transverse the middle… … manuscripts, early printed works, an extensive collec- Using the quadrant to measure the altitude.of Qnadrant of Tyrolean workmanship dating from tion of portraits and autographs of prominent mathe- an Inaccessible tower. about 1600. maticians, and curios gathered from many corners of Reproduction…
Mechanical · Patents · Illustration of books · Inches · Hyperspace · American supplement · Scientific American · Working drawings · Subject matter · Infinite number · Practical treatise · York city · Gas engines · Producer gas · Round trip
Internet Archive · Public domain (published before 1931). Free to use for anything.