How To Measure Parallelism 9 Steps With Pictures
Planar surface: Opposite flat surfaces of a rectangular solid need to be parallel to each other. Cylindrical surface: A cylinder appears round when looking at its end, but when held upright, its sides must be parallel for the cylinder to function properly. Parallelism also needs to be measured on the interior cylindrical surfaces of drilled holes. In technical drawing, the datum is marked with a capital letter in a square box called the datum feature symbol....