thumb | thumb | Korea under Japanese rule | Ja Rule | away goals rule | Cloistered rule | Tom Thumb | Ten Minute Rule | Taiwan under Japanese rule | thumb | General Tom Thumb | Ann Rule | Star Wars: Darth Bane: Rule of Two | The Rule of Four | The Adventure of the Engineer's Thumb | Rule Britannia | Rule 5 draft | mob rule | Michigan's Thumb | Just Like Tom Thumb's Blues | Home Rule League | Golden Rule | Forced labour under German rule during World War II | District of Columbia home rule | William Harris Rule | Under My Thumb | The Secret Adventures of Tom Thumb | Rule of St. Augustine | Let Love Rule | Hückel's rule |
The rule of thumb that Greenhill devised based upon his formula is actually what is seen in most places, including Wikipedia.
Diagonal Method, a rule of thumb in photography, painting and drawing