The circle of the mechanical arts : containing practical treatises on the various manual arts, trades, and manufactures (1813)
Martin, Thomas · London : Printed for Richard Rees · leaf 607
hen the account will stand thus : length of the two rods of brass be as sixty-eight, and 1 st Pair steel rods, marked 1, 1, extend downwards, - 2 the sum of the length of the three rods of steel be 2d Pair steel rods, marked 3, 3, extend downwards, - 2 3d The single central rod extends downwards… … A description of a pendulum with a wooden rod. — equal to two only, as we must deduct the depression ! The rod of this pendulum should be made of a straight of their root equal to one. VVe now find the little transverse piece at the top (to which is fixed the central grained yellow deal, which you…
Technology · Industrial arts
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from Examen dv livre des Recreations mathematiqves, & de ses problemes en geometrie mechanique, optique & catoptrique [du J. Leurechon] Où sont aussi discutées & restabiles plusieurs experiences physiques y proposées (1639)](https://img.insideoutlibrary.com/img/200/ia-examendvlivredes00mydo-376-71.webp)
