Pedal Steel Slide Rule

As I was learning about the space where pedal steel and music theory intersect, I made a slide rule out of card stock to help me understand. My dream was to have it manufactured and sell it to other steel guitarists. That never happened. 50 years later, I found the prototype in an old box in my closet. Here’s a photo of it, for your enjoyment.

prototype of a pedal steel slide rule

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