Brass pencil and crayon sharpener with adjustable settings allows for 3 distinct levels of sharpness - 'very sharp' to 'rather blunt'. The knurl attached to the end of the sharpener can be heard and felt clicking into place when it is turned. Depending on the setting, the pencil is allowed to enter more or less deeply into the interior of the sharpener. The precisely set angle between the cone and the blade then produces the desired point. Developed by DUX in the early 1950s. Includes leather case with snap.