Mechanical Advantage: Tools for the Wild Vertical

Mechanical Advantage: Tools for the Wild Vertical

Share this post

Mechanical Advantage: Tools for the Wild Vertical
Mechanical Advantage: Tools for the Wild Vertical
The envisioning of pitons, USA 1920s (Miriam O’Brien)
Copy link
Facebook
Email
Notes
More

The envisioning of pitons, USA 1920s (Miriam…

John Middendorf
Dec 21, 2022
6

Share this post

Mechanical Advantage: Tools for the Wild Vertical
Mechanical Advantage: Tools for the Wild Vertical
The envisioning of pitons, USA 1920s (Miriam O’Brien)
Copy link
Facebook
Email
Notes
More

USA adoption of pitons 1920s-1939 (part B) East Coast USA 1927-1933 (continuing mechanical advantage series by john middendorf)

Read →
Comments
User's avatar
© 2025 John Middendorf
Privacy ∙ Terms ∙ Collection notice
Start writingGet the app
Substack is the home for great culture

Share

Copy link
Facebook
Email
Notes
More