Category: Profile

Unilateral Tolerance and Bilateral Tolerance

by Seth Elder on October 12, 2020.

In this article, we explain the differences between bilateral, unilateral, and unequally disposed tolerances. What is a Tolerance? Tolerances on technical drawings communicate the amount of variation permitted from a target dimension.  The allowable variation...

Profile of a Surface

by GD&T Basics on December 18, 2014.

Profile of a surface describes a 3-Dimensional tolerance zone around a surface, usually which is an advanced curve or shape...

Profile of a Line

by GD&T Basics on December 2, 2014.

Profile of a line describes a tolerance zone around any line in any feature, usually of a curved shape...