New slide rule for standard parts

Attention has been called to a new slide rule for standardparts, which was recently put on the market in Switzerland and exhibited at the international standardization conference at Zurick. The danger of making mistakes in transferring standard dimensions to drawings and computations is practically eliminated and, furthermore, it is used much more quickly and conveniently than the usual tables of standard parts. A reprint, giving a picture and detailed description of this slide rule, is available upon request to the American Engineering Standards Committee, 29 W. 39th St., N.Y.C. at whose offices samples of the rule may be seen.