Category Archives: By Hound and Eye

Meet the Author: Jim Tolpin

In early March 2017, Jim Tolpin woke up in the middle of the night with a revelation: He finally understood where trigonometry comes from. “I was actually just working on that when you called,” he says. “And I actually think … Continue reading

Posted in By Hand & Eye, By Hound and Eye, Uncategorized | 16 Comments

Does This Entasis Make me Look Fat?

Well no, dear, the curvaceous tapering just makes you look muscular. Or maybe it’s just an optical illusion. Or maybe the builders knew that the swelling, though slight, imparted a bit more strength to the column. But let’s not get … Continue reading

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The Degree to Which Your Angle Lies

Here’s an old school carpenter’s (or landscaper’s) method of laying out a line, such as a foundation form or a hedge row, to a specified angle. The tools needed are simple, primitive even: A length of rope marked at a … Continue reading

Posted in By Hand & Eye, By Hound and Eye, Uncategorized | 24 Comments

Plumbing the Mystery of the Mason’s Medal

In this sketch I did of a Masonic “Past-Master’s Jewels” medal,  notice the representation of the pythagorean theorem. It is reported that its presence on the owner’s medal indicates that person was what we would likely now call a crew … Continue reading

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Sine Curve Tutorial

To develop the curves in the various brackets – here the support for the back fence on the lid of a desk – I followed the ancient practice of melding arcs of a circle along a straight line.     … Continue reading

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The Number of the Name is….

While I mostly use the sector for doing design and layout work in my shop, I realized recently that it’s also a great tool for showing someone (especially your kids) an intuitive approach to understanding fractions. Here’s how I’d describe … Continue reading

Posted in By Hand & Eye, By Hound and Eye | 4 Comments

Fractions in the Real World

Here’s a page from a forthcoming pamphlet I’m working on about the geometric truths that underlie – and led to the development of – all our layout tools, including (and ending up at) the sector. If you have kids around … Continue reading

Posted in By Hand & Eye, By Hound and Eye, Uncategorized | 2 Comments