https://en.wikipedia.org/wiki/Iron_Ring https://en.wikipedia.org/wiki/Iron_Ring >The Iron Ring is a ring worn by many Canadian-trained engineers, as a symbol a

https://en.wikipedia.org/wiki/Iron_Ring https://en.wikipedia.org/wiki/Iron_Ring >The Iron Ring is a ring worn by many Canadian-trained engineers, as a symbol and reminder of the obligations and ethics associated with their profession. The ring is presented to engineering graduates in a private ceremony known as the Ritual of the Calling of an Engineer.[1][2] The concept of the ritual and its Iron Rings originated from H. E. T. Haultain in 1922, with assistance from Rudyard Kipling, who crafted the ritual at Haultain's request.[1][3] https://en.wikipedia.org/wiki/Engineer%27s_Ring https://en.wikipedia.org/wiki/Engineer%27s_Ring