# Category: GD&T & Print Reading Basics

Articles related to reading engineering drawings and interpreting GD&T on the prints

## What is Geometric Dimensioning and Tolerancing (GD&T)?

by Crystal Bemis on June 9, 2021. (sticky)

What is GD&T? If you are involved in design or manufacturing, you may be familiar with the term, “GD&T,” or “Geometric Dimensioning and Tolerancing”. Geometric Dimensioning and Tolerancing is a set of rules and GD&T...

## First vs Third Angle – Orthographic Views

by GD&T Basics on March 30, 2021.

Orthographic views allow us to represent a 3D object in 2D on a drawing. Orthographic views can show us an object viewed from each direction. How the views are laid out on a drawing depends...

## What Are Basic Dimensions and How Do They Work in GD&T?

by Tom Geiss on January 30, 2021.

A question we are often asked here at GD&T Basics is, “what is a basic dimension?” – These dimensions are often fairly confusing as they look very similar to other dimensions you may be familiar...

## How Does 1st Angle Projection Work?

by Brandon John on January 19, 2021.

This post is in response to a question that we received on our question line from Gilroy. Gilroy asked us about the drawing projection method in an example problem that was a part of our...

## The Basics of Surface Finish

by Seth Elder on January 6, 2021.

Surface finish can be a confusing subject, especially when it comes to units or the difference between Ra and Rz. In this article, we will provide a broad overview and answer some of the most...

## Advantages of GD&T vs. Coordinate Tolerancing

by Crystal Bemis on November 6, 2020.

Everyone understands the simple plus or minus tolerances of coordinate dimensioning. So why use GD&T instead? Here are four reasons that GD&T has an advantage over coordinate tolerancing…   What are the advantages of GD&T...

## My Personal Experience with Engineering Drawing Basics

by Saif Afridi on September 28, 2020.

**As of April 1, 2022 – Engineering Drawing Basics has been renamed to Print Reading and Tolerances. The course content did not change, we simply updated the name to better reflect the product.** Engineer Essentials,...

## How GD&T Datums Control Degrees of Freedom

by Tom Geiss on May 19, 2020.

In this video, Tom explains how datums work, together with a datum reference frame, to allow you to inspect an imperfect part. Datum Fundamentals   A manufactured part will never be perfect. When inspecting a manufactured...

## GD&T Fundamentals Course Syllabus

by GD&T Basics on December 14, 2015.

Take a look below for a complete list of what we cover in our GD&T Fundamentals Course. We are confident this will be the best GD&T course you will find anywhere!