Sigmetrix helps enterprise leaders build higher quality, cost effective solutions—faster than ever before. 

    Our comprehensive solutions are trusted by teams across the enterprise in a variety of industries to help identify mechanical variation faster, resulting in more efficient processes and more cost-effective products


      How We Help

      Produce higher-quality, cost-effective products across the enterprise.

      Who We Help

      Solutions for manufacturers, engineers, and designers in a variety of industries.

      Where We Help

      Build better products and processes across the enterprise. 

      Robust solutions that streamline and enhance the mechanical variation management process.

      Our tolerance analysis and GD&T solutions  unite the ideal world of product design with the real world of manufacturing and assembly—where mechanical variation has a significant impact on product cost.



        Tolerance Analysis

        Predict, manage, and optimize mechanical variations.


        Understand permissible variation earlier in the design process.

        Model-Based Definition

        Optimize tolerances within 3D models.

        Meet the Team

        We've been helping build better products for 25+ years. 

        Our Partners

        We integrate directly with several major CAD platforms.

        Global Reach

        Tolerance analysis and GD&T solutions for a variety of industries worldwide.

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        Join the brightest, most talented, and most motivated teammates. 

        Resources to help you better manage mechanical variation. 

        Case studies, whitepapers, webinars, and more resources backed by our tolerance analysis and GD&T experts.


          Resource Center

          Learn how you can produce better products, reduce development costs, and more.


          We publish frequently on mechanical variation management, GD&T best practices, and more.

          Press Releases

          CETOL 6σ v11.4.0 3D Tolerance Analysis Software Now Available from Sigmetrix

          3 Minute Read

          CETOL 6σ v11.4.0 tolerance analysis software can now define pass/fail measurement objectives, import size dimensions and datum feature symbols based on MBD principles, and support non-centered profile tolerances.

          MCKINNEY, Texas –May 23, 2023 — Sigmetrix, experts in mechanical variation management, announced their latest version of CETOL 6σ tolerance analysis software, version 11.4.0, is now available for immediate download. Tolerance analysis benefits businesses in many ways. It helps improve profitability by balancing quality with manufacturing cost. Companies can also realize faster time to market by reducing the need for additional design and prototype cycles. Finally, it allows companies to gain confidence in their product and process decisions before making costly investments.

          CETOL 6σ enables product development teams to understand the often-complex impact of dimensional and assembly variation easily and fully on their designs. This knowledge enables them to make the proper adjustments before problems appear in manufacturing or, even worse, in their customers’ hands. Users of all expertise levels will appreciate the multiple levels of assistance available within the software. This new version of CETOL 6σ builds upon the powerful features already in place and adds many improvements, including:

          Measurement Objectives – When defining a measurement, you can set a measurement objective based on a statistical quality metric or a worst-case range. When solving the model, each measurement objective is marked either Pass or Fail. This allows for a quick scan of the model for measurement concerns.

          Improved CAD Annotation Linking and Importing–Datum import symbols may be imported from and linked to the CAD model. When importing feature annotations, dimensions and geometric tolerances are identified based on MBD principles. Feature and sketch dimensions are no longer imported.

          Centered Profile Tolerancing Standards– Profile tolerances may include an unequally disposed modification, Ⓤ, for ASME Y14.5 models or specified offset, UZ for ISO GPS for the following features including Plane, Cylinder, Sphere, Cone, and Torus features.

          Custom Parameters – In addition to the three pre-defined parameters (i.e. Custom 1, Custom 2, and Custom 3) you can now add an unlimited number of custom parameters for which you can specify a name and a value. These parameters can be used for capturing additional information that can be included in reports.

          Differentiated Support for Tolerancing –Users can now specify the Tolerance Standard (ASME Y14.5 or ISO GPS) used by each part. The Tolerance Standard can be set automatically from the CAD model or manually by the user.

          As with prior releases, CETOL 6σ v11.4.0 is available in English, Japanese, and Simplified Chinese.

          Sigmetrix President and CEO, James Stoddard states, “we are excited to release CETOL 11.4.0 to the market.” “With the many customer requested enhancements we feel confident that companies will see improvements in their journey to build better products through mechanical variation management.”

          Sigmetrix provides a complete portfolio helping customers design and produce better products through mechanical variation management.  In addition to CETOL 6σ, Sigmetrix offers an array of software and training solutions including:

          • EZtol, a 1D analysis tool that works directly with your CAD models, including embedded tolerances (PMI), to make it easier to create, manage, and report upon multiple 1D tolerance analyses, or stackups, in an assembly.
          • GD&T Advisor, an interactive tool that provides expert guidance on the correct application of GD&T withing the PTC Creo environment.
          • Training on a variety of topics including GD&T, tolerance analysis, dimensional management, and MBD / MBE.
          • Computer-Based Training on either an individual or enterprise basis developed to make learning at your own pace easy and intuitive.
          • Consulting and implementation services team with years of experience in tolerance analysis and GD&T definition offers a variety of consulting services to augment your team, speed your project along and run analyses for your assemblies.

          CETOL 6σ 11.4.0  is available immediately for current users at:

          For more details on the capabilities of CETOL 6σ, visit

          Save the Date! On Wednesday June 7th at 11:00AM EST join Sigmetrix’s Application Engineer, Ross Snyder for one hour present a live webinar focused on the CETOL 6σ 11.4.0 release.

          About Sigmetrix
          Sigmetrix has been helping companies produce better products for over 20 years through a combination of software solutions, training, and consulting services that focus on managing the impact of mechanical variation. For more information, visit their website at

          Sigmetrix Team

          Sigmetrix Team

          For more than 30 years, we’ve developed innovative software solutions to help enterprises produce better products. Our expertise helps companies ensure design intent aligns with manufacturing processes, enabling companies to achieve higher quality and efficiency in product development and manufacturing.