and then join the longer sides to them.
[Fig. 81]: If this figure can be drawn correctly, a great success has been achieved; the circle is a most difficult form to delineate, and without system could not be accomplished. Draw the square and straight lines within it with great care, examine each point of the octagon to see that it is at the same distance from the centre, and then draw the circle.
EXAMPLES FOR PRACTICE.
Several figures, [83] to [96], representing more or less familiar parts of machines, utilities, etc., are introduced for practice in free-hand, but—
It must be noted that even in free-hand the wise student will occasionally use the straight edge and compasses, so as to make his first attempts fairly creditable. Many good draughtsmen have begun by simply copying such figures and illustrations as are used throughout this volume and other similar sources; perhaps there is nothing better for practice or training than the copying and reproducing of samples of good mechanical drawings, yet it must always be remembered that advancement in free-hand must be made in the line of less to greater efforts, and that the why and wherefore will be constantly asked by the aspiring student; that good and correct drawings are to be aimed for at all times in every line and dimension—never forgetting the law of proportion in the smallest outlines of objects to be represented.
Fig. 78.
Fig. 79.
Fig. 80.