Drawing by hand
Handmade drawings are normally made with either pen or pencil. The pen tends to be favoured when a more precise line is required, and this was particularly important in the days when dye-line printing was the most common method of reproducing drawings. The computer has now superseded the pen as the most effective means of making and reproducing precise drawings, in particular those providing technical information for building contractors. It is the more effective tool but, if drawings are any longer to be made by hand, it is perhaps logical that they should now be made in pencil because these have a quality that the computer cannot (yet) match.
The first sketches
The handmade drawing may have been superseded by the computer-generated ...