I'm seeking a piano tning tool for the blind

[pianotune05 at comcast.net]

Hi Everyone,
I'm still here reading the posts as I get time.  I continue to be active in learning this craft tuning and enjoying every minute of it.  I have a quick question. 

I met someone who attends my church who's uncle , a blind piano tuner, invented and patened a tool for the blind which was designed to make tuning easier.  He's no longer alive, but his name was William Faulkner from Chicago, not the author from Missippi.  Does anyone know about this tool and where I can find it/purchase it?  Thanks
Marshall

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