Half & Quarter Square Triangle Rulers and Circle Tool

(24 customer reviews)


The Half and Quarter Square Triangle Rulers and Circle Tool is one of the most basic units in quilting.

Also referred to as either ‘HST’ or ‘Triangle Square’, these units are simply a square made from two equal right triangles.

Quarter square triangle units are square patchwork units that are made up of four equally sized 90 degree triangles.

These tools are designed to make these units quick, easy and accurate.

The Circle Tool will easily draw circles from 1/2″ to 20″ in diameter, making it a quick and simple way to get perfect circles for your projects.

Pauline recommends using the Bohin Pencil Fabric Marker for use with the Half and Quarter Square Triangle Rulers and Circle Tool.

Watch the video to see how to use the Rulers and Circle Tool.

24 reviews for Half & Quarter Square Triangle Rulers and Circle Tool

  1. Linda Martin (verified owner)

    It’s so easy now to cut triangles and have them line up when sewing.

  2. Anne D. (verified owner)

    Haven’t used yet but looking forward to doing so.

  3. Joy Darby (verified owner)

    Ideal for small jobs.

  4. Anonymous (verified owner)


  5. Denise Hyde (verified owner)

    Very useful tool

  6. Anonymous (verified owner)

    Very useful and can do so many things

  7. Anonymous (verified owner)

    Fantastic and using them at the moment on a HST quilt I am making

  8. ALAN M. (verified owner)

    Love how simple they are to use with the guides to follow on YouTube as well.

  9. Jenny Begley (verified owner)

    Very happy with this purchase

  10. Esther Hinsley (verified owner)

  11. Judy W. (verified owner)

    Works well. Excellent tools

  12. Pauline Foy (verified owner)

    Extremely happy with your product . Thank you. I will be making further purchases in the new year. Pauline Foy

  13. Kathy Thompson (verified owner)

    Just bought these and have used some of others and they are brilliant. Quilting life is getting better

  14. Anonymous (verified owner)


  15. Anonymous (verified owner)

    Love them

  16. Amanda D. (verified owner)

    Love these rulers have helped me get better at accurate piecing

  17. Laurel (verified owner)

  18. Kaye Leamon (verified owner)

    A great help with my quilting

  19. janice waters (verified owner)

    Your products are fantastic. Unfortunately I have just developed arthritis in both hands and am struggling to use them at this time. Hopefully I will have it under control soon and will be able to use them again.

  20. Maria Ganly (verified owner)

    Love my circle tool.

  21. Anne M. (verified owner)

    An excellent tool, it will be a useful tool for many quilting projects.

  22. Julie Briggs (verified owner)

    Wonderful for those smaller or any I guess 1/2 square triangles. Love them

  23. Faye O. (verified owner)

    Makes triangles easy and accurate

  24. Diane Harvey (verified owner)

    Very handy

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