Golden Mean Calipers

(20 customer reviews)

$40.00

Trent has been using Golden Mean Calipers in his own work and teaching for years. A handy tool to help work towards perfecting your form while turning. Made right here in Fort Collins, Colorado these Golden Mean Calipers are steel coated with black oxide. Currently available in Trent’s go-to 12″ size, a mini version and larger 16″ and 20″ versions coming at a later date.

Watch this short video for more information on how to use.

SKU: GMC Categories: , ,

Additional information

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20 reviews for Golden Mean Calipers

  1. Greg Kimberlin (verified owner)

    This tool is high quality and will help me with making sure I get the purportions correct.

  2. Dave N. (verified owner)

    I’ve been wanting one of these for a long time, just a kind of tool that tells you if your design might be pleasing to others (and me). Now I have one, awesome quality!

  3. Matthew Clarke (verified owner)

    Super tool! Easy to use, very consistent.

  4. Richard D. (verified owner)

    A tool I didn’t need have but that I’m very happy to have now! The Golden Mean isn’t hard to calculate but it sure is nice having calipers that allow you to move over a forms while experimenting with proportions. How’s the base to the largest diameter? Where’s a good place to place an embellishment on the surface? I don’t see the GM ratio as establishing a rule as much as providing a reference to visually pleasing proportions.
    It’s also nice that this tool is so well made. The legs are just stiff enough to stay put without being hard to move. The 12″ size is also working out well and I hear that larger sizes will be available at some point.
    Another great tool from a great company!

  5. Devin (verified owner)

    well made

  6. William Shepard (verified owner)

    Very pleased with the quality, and an instant improvement in my shape design.

  7. Robert Keith (verified owner)

    I have been struggling with the 1/3 rule while learning to turn. After watching Trents video on how the tool works it convinced me in making the purchase hopefully correcting the scale of my turnings.

  8. Gary B. (verified owner)

    This is the first tool I have ordered from Trent Bosch Tools. It arrived very well packaged and after a review it is very well made. A simple tool well made that works with ease. I will enjoy using this to improve my proportions of my bowls and vases. The only improvement would be not to use the USPS as their delivery is awful. Thanks

  9. Dan West (verified owner)

    Great quality!!! Looking forward utilizing them in my designs

  10. Wesley Daniels (verified owner)

    Very nice piece of kit!

  11. Adam (verified owner)

    Great product that’s well made

  12. Larry Taylor (verified owner)

    I have always used the Golden Mean as a starting place for proportions, This makes the calculation very quick and convenient. Very well made tool.

  13. Stephen H. (verified owner)

    A little stiff at first but once you get used to it it works great highly recommend

  14. Frank Mangiapane (verified owner)

    Once again, an excellent tool from Trent Bosch Tools!

  15. Brian N. (verified owner)

    I would like to see them made from thicker stock, but the work as they should.

  16. Hashim T. (verified owner)

    Calipers are great for creative layouts especialy simple pleasing curve transitions. I haven’t used them yet but they seem solid and well built.

  17. Edgar Brannon (verified owner)

    I know, it is cheating

  18. Ron E. (verified owner)

    An ingenious idea, much better than the homemade version I’ve used in the past.

  19. Tim Elbert (verified owner)

    Excellent fit and finish! Definitely better than my homemade ones.

  20. Marc C. (verified owner)

    Solid tool

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