Your tonsils are gland-like structures in the back of your throat. You have one located in a pocket on each side. Tonsils are made of tissue that contains lymphocytes -- cells in your body that prevent and fight infections.onsil stones, or tonsilloliths, are formed when this trapped debris hardens, or calcifies. This tends to happen most often in people who have chronic inflammation in their tonsils or repeated bouts of tonsillitis.
A self-centering chuck, also known as a scroll chuck, uses dogs (usually called jaws), interconnected via a scroll gear (scroll plate), to hold onto a tool or workpiece.
Secure the self-drilling No. 10 screw into the. VMA mounting slot with a power screwdriver and. 100 mm (4-inch) extension socket. Otherwise, use. a punch to mark the position of the shoulder. washer, and then drill a hole into the VAV box. through the mark using a 3.5 mm (9/64 in.) drill bit. Insert the mounting screw, and tighten against the. washer.