Sunday, July 20, 2008
Dimensioning circles
All dimensions of circles are proceeded by this symbol; 
. There are several conventions used for dimensioning circles:
(a) shows two common methods of dimensioning a circle. One method dimensions the circle between two lines projected from two diametrically opposite points. The second method dimensions the circle internally.
(b) is used when the circle is too small for the dimension to be easily read if it was placed inside the circle. A leader line is used to display the dimension.
(c) the final method is to dimension the circle from outside the circle using an arrow which points directly towards the centre of the circle.
The first method using projection lines is the least used method. But the choice is up to you as to which you use.
posted by yjlevia at 1:23 AM
