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Take the GD&T Basics Resources with you on the fly.

Download Our GD&T Basics App

You can save our app to your mobile device.







To get the app, scan or click on the
QR code and follow the instructions below.

To download the app with

Chrome Browser on Android

Once the app is open, to save it to your home screen:

1. Click the "menu" icon

2.Navigate to and click "add to home screen"

To download the app with

Chrome Browser on iPhone

Once the app is open, to save it to your home screen:

1. Click the "share" icon 

2.Navigate to and click "add to home screen"

To download the app with

Safari Browser on iPhone

Once the app is open, to save it to your home screen:

1. Click the "share" icon

2.Navigate to and click "add to home screen"

What's in the App

True Position Calculator

Easily calculate positional deviations and bonus tolerances to determine conformance. Input envelope size measurements to also calculate bonus tolerances and their affect of conformance results.

GD&T Resources

Jump to our library of free GD&T blog articles and training to help during difficult decisions. Our articles and videos dive deep into difficult topics and topics not typically covered in formal training.

GD&T Symbols Page

Pull up information about the 14 GD&T symbols and other foundational concepts of GD&T. Use this page when ever you come across a symbol that you havent seen before or have forgotten its interpretation.