HINTS FOR GOOD LINEWORK
1. Ordinary main lines on the drawing should be thin but at the same time bright and
these should be of uniform intensity. Uniform intensity of lines means that the
thickness and the darkness of the lines should remain through their entire lengths.
2 . All the measurements should be exact upto a very high degree of accuracy.
Difference in measurement, in any case, should not be more than 1/64″ (0.3 mm) per
one line of length upto 12″.
3 . No marks or points should be visible on the finished drawing. To lay out the
dimensions during drawing work, either use a very small point from needle of the
divider or a very small and light transverse construction line.
4 All horizontal and vertical lines should be truely horizontal and vertical.
5. Use proper shape of the line to be used in a particular situation according to the
fixed conventions.
6. Intersection of the lines should be perfect which means that starting and ending
points of the lines should be well- defined; line should not be projecting from the
intersection and there should be no gap in between the lines.
Fig. 2.23 Corner Formed by Lines.
7. The circular lines drawn with compass should have the same thickness and
brightness as that of the other lines. For that, lead in the compass may be kept one
grade softer than lead in the pencil. For drawing circles, compass is always opened
equal to the radius; if diameter of a curve is given, first divide it by 2 to find the
radius.
8. A slight rotation of the pencil while drawing the line keeps the conical-shaped
pencil in good condition and lines of uniform thickness may be obtained. However,
when thickness of the lines starts increasing, the pencil should be sharped again.
