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.
Versatile and accurate, it has self-leveling capability in the horizontal plane and manual leveling in the vertical plane with 90-degree split beam. Choose among three rotational speeds (200, 400 or 600 RPM) to match the device to your preferred applications. Includes self-leveling rotary laser level, hard-shell storage case, adjustable-height tripod, 8 ft. grade rod, detector with clamp, tinted glasses, magnetic target, wall-ceiling mount and batteries.