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99% Invisible

100 Objects #11: Brannock Device

July 31, 2026 • 27m

Summary

⏱️ 7 min read

Overview

A deep dive into the Brannock device, the metal foot-measuring tool found in shoe stores, exploring its invention in 1925 by Charles Brannock, its enduring design excellence, and what its simple business model represents in contrast to modern American capitalism dominated by private equity and shareholder value.

The Birth of Revolutionary Shoe Fitting

In 1925 Syracuse, New York, Charles Brannock introduced a revolutionary metal device at his father's shoe store that transformed how shoes were fitted. Unlike existing tools that only measured length, the Brannock device measured length, width, and crucially, arch length—the distance from heel to the ball of the foot. This arch measurement was a brand new concept that ensured better-fitting shoes and reduced wear, addressing a critical need that no other device had solved before.

  • The Brannock device measures three dimensions: length, width, and the innovative arch length measurement from heel to ball of foot
  • Arch length measurement was a brand new concept in 1925 that helped two people with the same heel-to-toe measurement get properly fitted shoes
  • The device revolutionized shoe size fitting and made shoes last longer due to better fit
" It just looks like it knows what it's doing. It looks so official and professional and it has so many calibrations and numbers on it. "

A Singularly Focused Inventor and His Obsession

Charles Brannock, born in 1903, worked at his father's shoe store and noticed customers constantly complaining about ill-fitting shoes. While attending Syracuse University in his early twenties, he became obsessed with creating a better measuring device, waking up at 2 or 3 AM to sketch designs and take notes. He never invented anything else in his lifetime, married only to his invention, and created a company named after himself and his device.

  • Charles Brannock's college roommate recalled him waking up at 2-3 AM to sketch invention ideas for the device
  • Brannock viewed shoe fitting with medical seriousness, stating shoe salesmen have a responsibility like doctors
  • Brannock was a lifelong bachelor who never invented anything else—it was one and done at age 20
" The shoe salesman, like a doctor, has a distinct responsibility to his customers. A mistake in the fitting of a shoe, particularly a child's, can easily endanger a person's health. The misfitted feet of today are the crippled feet of tomorrow. "

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