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Tag: Position Tolerances

The LMC Modifier

by Crystal Bemis on February 9, 2026.

In this Question Line video, Jason explains how the LMC modifier impacts position tolerance, minimum wall thickness, and assembly clearance.

Designing for Coaxial Holes

by Crystal Bemis on July 28, 2025.

In this Question Line video, Jason reviews a submitted weldment drawing and demonstrates how to calculate the position tolerance needed for a zero-clearance fit in the worst-case assembly scenario, ensuring that the shaft can pass through two coaxial holes.

Position Tolerance vs “True Position”

by Crystal Bemis on June 8, 2022.

Though many people refer to the GD&T Position symbol as "True Position," they are not the same thing. Read on to learn the difference between Position and True Position and how they work together to define the position of a feature.

Position Tolerance and Basic Dimensions

by Seth Elder on November 12, 2020.

The video below is in response to a question that we received on our question line from Ash.   The question is as follows: “I regularly see drawings where spacing between a pair of holes is...