Another special form of technical draw when measurement is the Dimension of cones. The dimensions of bowling according to ISO 3040th
For the standard measurement for following are Taper extent required:
The ratio of Verjügung is using a special symbol for the Dimension of tapered indicated. The cone is a triangle symbol, which is based on a reference line. An arrow points from the reference line on one of the tapered flanks. The relationship Necking is behind the cone-registered symbol.