- 5/28/2026 - What is Knurling?
- 5/21/2026 - Composite Profile - Lower Frame Interpretation
- 5/14/2026 - Position vs ASME Concentricity
- 5/07/2026 - Radial Patterns as Datums
- 4/30/2026 - What to Ask Before You Buy GD&T Training
- 4/23/2026 - Collecting Dots vs Connecting Dots
- 4/16/2026 - CAD vs CMM Basic Dimensions
- 4/09/2026 - First Angle vs Third Angle
- 4/02/2026 - Composite Profile with Unequally Disposed Tolerance
- 3/26/2026 - Position vs Runout
- 3/19/2026 - Circularity vs Runout
- 3/12/2026 - Meet Steve Bobek, GD&T Instructor
- 3/05/20026 - How to Report Composite Position
- 2/26/2026 - Meet Jake DeVore, GD&T Instructor
- 2/19/2026 - The LMC Modifier
- 2/12/2026 - What's the Deal with Surface/Axis Interpretations?
- 2/05/2026 - When Should I Use Basic Dimensions?
- 1/29/2026 - Industry Readlines: Best of 2025
- 1/22/2026 - Why You Shouldn't Apply Bonus Tolerance Modifier to Threaded Holes
- 1/15/2026 - What Tolerances Apply to Chamfers and Edge Breaks
- 1/08/2026 - Design Review: The Ambifacient Lunar Waneshaft
Industry Readlines Archive
Every Thursday, our Industry Readlines Newsletter features interesting, helpful, and hilarious reads from around the technical world. Learn what you have missed by checking out our archives!
Select the date below to jump to newsletters published in that year.
2026 Newsletters
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2025 Newsletters
- 12/18/2025 - Does the CAD Model or Drawing Info Take Precedence?
- 12/11/2025 - How to Control True Position of a Interrupted Hole
- 12/04/2025 - GD&T Design Course is live!
- 11/20/2025 - Reviewing and Redlining a Bad Drawing
- 11/13/2025 - Part Setup and Datum Qualification Using a CMM
- 11/06/2025 - Inspection Course Sample Lesson
- 10/30/2025 - True Position & Diametric Deviations
- 10/23/2025 - How To Measure a Threaded Hole
- 10/16/2025 - How to Dimension the Depth of Threads
- 10/09/2025 - How to Use Multiple Features for a Datum
- 10/02/2025 - Tapered Surfaces and the From-To Modifier
- 9/25/2025 - Considering Form in Tolerance Stack Up
- 9/18/2025 - Comparing Profile Tolerancing Methods
- 9/11/2025 - Flatness or Parallelism
- 9/04/2025 - Surface Finish and Flatness
- 8/28/2025 - 3 Things Manufacturing & Quality Wish You Knew
- 8/21/2025 - Rounding Basic Dimensions
- 8/14/2025 - Checking Runout Between Centers
- 8/07/2025 - Designing for Coaxial Holes
- 7/31/2025 - Quick Sanity Checks on Extrusions
- 7/24/2025 - Profile on Sheet Metal
- 7/17/2025 - Irregular Features as Datum Features
- 7/10/2025 - Dimensions Identified for Inspection
- 7/03/2025 - Repetitive Pattern of Features and Datums
- 6/26/2025 - GD&T Tolerance Analysis - Profile
- 6/12/2025 - Separate Requirements at MMB
- 6/05/2025 - NEW Online Inspection Course
- 5/29/2025 - Unless Otherwise Specified
- 5/22/2025 - The Datum Reference Frame
- 5/15/2025 - Avoiding Tolerance Stacks with GD&T
- 5/08/2025 - Online Inspection Course - Lesson Preview
- 5/01/2025 - New ONLINE GD&T Inspection Course
- 4/24/2025 - GD&T Knowledge Quiz
- 4/17/2025 - Emily on Mavens of Manufacturing
- 4/10/2025 - GD&T Basics App
- 4/03/2025 - True Position Calculator
- 3/27/2025 - Significant Figures and Their Effects on Inspection
- 3/20/2025 - Feature of Size Flatness
- 3/13/2025 - Rule #1 and Title Block Tolerances
- 3/06/2025 - Continuous Features vs Pattern Features
- 2/27/2025 - Tolerances with Draft
- 2/20/2025 - Flatness and Rule #1
- 2/13/2025 - True Position for Multiple Features
- 2/06/2025 - Tolerances for Fillets and Rounds
- 1/30/2025 - Measure and Report Unequally Disposed Profile
- 1/23/2025 - Related vs Unrelated Envelopes
- 1/16/2025 - Profile of a Surface with No Datums
- 1/09/2025 - Best of 2024
2024 Newsletters
- 12/19/2024 - Controlling a Pattern of Surfaces
- 12/12/2024 - Profile Unequal Zone
- 12/5/2024 - Positional Control of X,Y, and Z
- 11/21/2024 - Profile of a Surface vs Profile of a Line
- 11/14/2024 - Effects of Larger Tolerance Values
- 11/7/2024 - Importance of Qualifying Datums
- 10/31/2024 - Flatness- Surface vs Feature of Size
- 10/24/2024 - How to Find Zero
- 10/17/2024 - When to Use GD&T
- 10/10/2024 - Coaxiality vs. Concentricity vs. Position
- 10/3/2024 - Size Dimensions to Avoid
- 9/26/2024 - True Position and Diametric Deviations
- 9/19/2024 - Ring Gages to Check Size Dimensions
- 9/12/2024 - Datums for Castings
- 9/5/2024 - Symmetric Parts and GD&T
- 8/29/2024 - Reverse Inspections of Orientation
- 8/22/2024 - Reporting Size Dimensions with a CMM
- 8/15/2024 - IMTS 2024
- 8/8/2024 - Reliable Datum Features
- 8/1/2024 - When to use DML Straightness
- 7/25/2024 - When to Use DMP Flatness
- 7/18/2024 - Flatness with Datum Targets
- 7/11/2024 - Unilateral Tolerance and Bilateral Tolerance
- 7/4/2024 - When to Use MMC and MMB
- 6/27/2024 - True Position on Bolt Circle Diameters
- 6/20/2024 - Reference Dimensions on True Position
- 6/13/2024 - Composite Profile Control
- 6/6/2024 - Radial Hole Pattern as a Datum Feature
- 5/30/2024 - Cylindricity Measurements
- 5/23/2024 - Checking Circularity with Digital Equipment
- 5/16/2024 - What Are Basic Dimensions and How Do They Work in GD&T?
- 5/09/2024 - Radial True Position with Composite Tolerance
- 5/02/2024 - How to Inspect True Position at an Angle
- 4/25/2024 - Composite Position vs Multiple Single Segment Tolerances
- 4/18/2024 - Q&A with a GD&T Expert
- 4/11/2024 - GD&T Position for Bidirectional Control
- 4/04/2024 - Measuring Runout & Circularity with V-Blocks
- 3/28/2024 - Position Tolerance and Basic Dimensions
- 3/21/2024 - Advantages of GD&T vs. Coordinate Tolerancing
- 3/14/2024 - Profile Inspection - Vectors in CMM Measurement
- 3/07/2024 - New Course Announcement - GD&T Inspection
- 2/29/2024 - What NOT to Do: Avoiding Common Errors in GD&T Drawings (Part 4)
- 2/22/2024 - What NOT to Do: Avoiding Common Errors in GD&T Drawings (Part 3)
- 2/15/2024 - What NOT to Do: Avoiding Common Errors in GD&T Drawings (Part 2)
- 2/08/2024 - What NOT to Do: Avoiding Common Errors in GD&T Drawings (Part 1)
- 2/01/2024 - Runout vs Size Controlling Circularity Example
- 1/25/2024 - Position vs. Coordinate Dimensions
- 1/18/2024 - Bridging the Skills Gap
- 1/11/2024 - Multiple Identical Features Symbol
- 1/04/2024 - Best of 2023
2023 Newsletters
- 12/14/2023 - Profile Deviation Reporting
- 12/07/2023 - Go/No-Go Gaging & Rule #1
- 11/30/2023 - The Basics of Surface Finish
- 11/16/2023 - Meet Jason Richter, Training Design Engineer
- 11/09/2023 - CMM Inspection Basics
- 11/02/2023 - Flatness - Per Unit Basis
- 10/26/2023 - Position Calculator Launch!
- 10/19/2023 - Inner or Outer Diameter Datum Feature
- 10/12/2023 - Metric vs. Inch Dimensions & Tolerances
- 10/05/2023 - Functional Gaging & CMMs
- 9/28/2023 - Flatness – Surface vs. Feature of Size
- 9/21/2023 - A Complicated Surface as a Datum
- 9/14/2023 - GD&T Interview Questions: What to Expect?
- 9/07/2023 - Designing to MMC and LMC
- 8/31/2023 - Parallelism – Can you Reference 3 Datums?
- 8/24/2023 - GD&T For Everyone
- 8/17/2023 - Datums, Datum Features, and Datum Simulators
- 8/10/2023 - ISO vs. ASME Position Tolerance
- 8/03/2023 - Circularity, Rule #1, and How to Report
- 7/27/2023 - Understanding Maximum Material Condition
- 7/20/2023 - Control on Multiple Profiles
- 7/13/2023 - Diametric Tolerance Zones
- 7/06/2023 - Using Runout to Measure Concentricity
- 6/29/2023 - Why Understanding GD&T Helps To Create Better Parts
- 6/22/2023 - MMC Modifier and Wall Thickness
- 6/15/2023 - Locating Datum Features
- 6/08/2023 - Rule #1 and DML Straightness
- 6/01/2023 - Sheet Metal Holes as Datum Features
- 5/25/2023 - Surface Finish and Flatness
- 5/18/2023 - Virtual Condition vs Tolerance Zone
- 5/11/2023 - How GD&T Influences Manufacturing and Inspection Processes
- 5/04/2023 - Technologist vs Senior-level GDTP Exam-Our Experience
- 4/27/2023 - Meet Molly Olson, GD&T Instructor
- 4/20/2023 - GD&T Basics Careers
- 4/13/2023 - Perpendicular Datums from Imperfect Features
- 4/06/2023 - Identical Virtual Conditions for Mating Boss and Bore Features
- 3/30/2023 - A Pattern of Holes as a Datum Feature
- 3/23/2023 - A Single Point as a Secondary Datum
- 3/16/2023 - Slope Modifying Symbol
- 3/09/2023 - Applying Position Tolerances to Countersunk Fixed Fastener Assemblies
- 3/02/2023 - Conical Taper
- 2/23/2023 - Arc Length
- 2/16/2023 - Parting Lines
- 2/09/2023 - SR-3iA/U SCARA Robot, from IMTS 2022
- 2/02/2023 - Depth Symbol
- 1/26/2023 - Dimension Origin Symbol
- 1/19/2023 - Break Edges Note
- 1/12/2023 - Best of 2022
- 1/05/2023 - Fillets & Rounds
2022 Newsletters
- 12/15/2022 - Chamfer Dimensioning
- 12/08/2022 - Spherical Radius Symbol
- 12/01/2022 - Spherical Diameter Symbol
- 11/17/2022 - Our Experience at IMTS 2022
- 11/10/2022 - Controlled Radius Symbol
- 11/03/2022 - Radius Symbol
- 10/27/2022 - Square Symbol
- 10/20/2022 - Diameter Symbol
- 10/13/2022 - Position Conversion Chart
- 10/06/2022 - Knurling
- 9/29/2022 - Countersink Symbol
- 9/22/2022 - Spotface Symbol
- 9/15/2022 - Common Thread Information: Diameters, Pitch & Threads per Inch
- 9/08/2022 - Counterbore Symbol
- 9/01/2022 - GD&T Interview Questions: What to Expect?
- 8/25/2022 - How Tolerances Impact Machinists
- 8/18/2022 - Ask a GD&T Expert - Demos at IMTS 2022
- 8/11/2022 - Keyseats and Keyways
- 8/04/2022 - Position Symbol
- 7/28/2022 - How GD&T Datums Control Degrees of Freedom
- 7/21/2022 - Tangent Plane Symbol
- 7/14/2022 - Applying GD&T to a Drawing in SolidWorks
- 7/07/2022 - Restrained Condition Note
- 6/30/2022 - Free State Symbol
- 6/23/2022 - Projected Tolerance Zone
- 6/16/2022 - Position vs True Position
- 6/09/2022 - Circular Runout vs Total Runout
- 6/02/2022 - Continuous Feature Symbol
- 5/26/2022 - How GD&T Helps Make Better Parts
- 5/19/2022 - Avoiding Tolerance Stacks with GD&T