A raster drawing from a scanner can be converted to a vector format for later use, such as finite-element analysis. Raster drawings can be compressed to store in less disk space than the same drawing ...

Inspired by the Martin Scorsese film Hugo, an obsessive Lego enthusiast built a programmable machine that writes messages and draws pictures. All you have to do is turn a crank. Andrew Carol, who ...

(2) Machine Construction and Drawing. Book ii. By A. E. Ingham. Pp. xii + 180. (London: G. Routledge and Sons, Ltd., 1914.) Price 3s. net.