Tag: Feature of Size

Feature of Size Flatness

by Crystal Bemis on March 10, 2025.

In this Question Line video, Jason compares flatness applied to a feature of size with flatness applied to a surface.

Flatness – Surface vs. Feature of Size

by GD&T Basics on February 12, 2021.

In this video, Brandon discusses the difference between measuring Flatness of a Surface and Flatness of a Feature of Size (FOS). Flatness of a Surface Surface flatness is the type of flatness that most people...