<p><strong>Fig. 3.17.</strong>&nbsp;(<strong>B</strong>) Clod card attached to a plastic tray using epoxy adhesive. Note the four holes in the tray for securing a weight.</p>

Fig. 3.17. (B) Clod card attached to a plastic tray using epoxy adhesive. Note the four holes in the tray for securing a weight.

Image by Matthew Lurie