Capacity: corner gauge, quantitative angle gauge, right angle gauge, measuring bone disk, oblique triangle ruler, soft leather ruler. Functions: Various living and bone measurements, such as measuring the length of the head, width of the head, width of the face, width of the jaw, width of the jaw, measuring the length of the skull, the width of the skull, the width of the face, the measurement of the width of the shoulder scapula of the skull, the measurement of various angles, inner diameter, outer diameter, length, width and depth of the skull and bone.