<p><strong>Fig. 2.16.</strong> Make the scale-and-cork assembly by (<strong>A</strong>) marking the center of the cork (<strong>B</strong>) starting a hole in the cork with a paper clip (<strong>C</strong>) inserting the skewer into the cork and (<strong>D</strong>) darkening the mark at which the skewer meets the cork.</p>

Fig. 2.16. Make the scale-and-cork assembly by (A) marking the center of the cork (B) starting a hole in the cork with a paper clip (C) inserting the skewer into the cork and (D) darkening the mark at which the skewer meets the cork.

Image by Byron Inouye