Picture a rectangular object. Due to it's absolute tenuousness the object can be perfectly depicted in two dimensions. From the centre its features are symmetrically mirrored along two axes. The outer edges are straight, inboard there's a rounded inlet, following the overall rectangular symmetry. It's haptic design is based on two principles: it is extremely sharp on the upper and lower edge whilst the central cut offers a grip. As for main usage, it is best-known as a headcleaner, selfdestruction mechanism, and both used for the layout of the crystalline line and in sketching. King Camp Gilette. daegseingcny