Thistlebase
Cunningham Rings: What They Are and Why
Technical explanation of Cunningham Rings, their purpose, installation, usage, advantages and disadvantages in Thistle sailing, including comparisons to traditional methods of sail adjustment.
View original on Google Drive · page 17
The scanned issue opens in Google Drive; turn to page 17.
This is a summary. The full article text is © the Thistle Class Association — read the original scan via the link above.