Climbers Use Odd Exerciser (Sep, 1939)
Climbers Use Odd Exerciser
Made like a rungless ladder with adjustable sides that can be moved apart or brought closer together at will, a novel exerciser recently constructed was designed especially for mountain climbers. Straddling upward between the side-pieces, climbers obtain useful practice for mounting the narrow gaps and crevices they meet in a real climb.
I used to do this in the hallway when I was a kid. I had no idea it was an actual ‘thing’.