Drafting Instruments and Operations e-bog

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. In the former cases it may be a great convenience, and in the latter one almost a necessity, to be able to express one's designs by intelligible draw -ngs. The power, however, both to make and to understand these draw ings - that is, to write and to read the graphic language, must be acquired by an orderly study of Geometrical Drawing, beginning with the rudiments. Such study would, therefore, seem fitted to be everywhere, as now in some places, a useful element in common education.