In this Question Line video, Jason compares flatness directly applied to a surface associated with a feature of size against flatness applied to a feature of size.
In this Question Line video, Jason answers a student's question regarding whether a default angular tolerance (found in the Title Block) must be taken into account in addition to the part meeting Rule #1 for it to pass inspection.
In this Question Line video, Jason explains how to calculate the flatness tolerance of a surface for a given example based on the size tolerances and Rule #1.
In this Question Line video, Jason reviews how Rule #1 controls the size and form of a feature of size, and what this means for ring gage design and inspection reporting.
In this Question Line video, Jason discusses manual vs CMM inspection and the reporting requirements of the ASME Y14.45 standard (Measurement Data Reporting standard).
In this Question Line Video, Brandon explains Rule #1 of GD&T (the Envelope Principle) and how Go/No-Go gages are used to verify that Rule #1 is met for a feature of size.
In the Question Line Video below, Jason answers a student’s question regarding whether a feature of size can be designed to both Maximum Material Condition (MMC) and Least Material Condition (LMC) boundary constraints.
"Why doesn’t Rule #1 apply to the straightness of a Derived Median Line?" In this article, we look at both surface straightness and straightness of a feature of size to understand why Derived Median Line Straightness overrules Rule #1 of GD&T.
GD&T Rule #1, also known as the Envelope principle, states that the form of a regular feature of size is controlled by its “limits of size." Limits of size, or otherwise known as size tolerances, can be seen in many forms. A few of them are symmetric, unilateral, and bilateral.
This video is in response to a question that we received on our question line from Jamee. Jamee’s question is as follows: “For parallelism of a circular feature of size (axis) can you use two...
This video is in response to a question that we received on our question line from Lokesh. Lokesh asked us if a material modifier can be used with cylindricity. Geometric Dimensioning and Tolerancing modifiers are...
This video is in response to a question that we received on our question line from Amber. Amber asked us if the tolerance value for circularity can be obtained by subtracting the upper limit of...