A large old pipewrench, part of the product line of the A. B. Jardine Co. of Hespeler (Cambridge) Ontario. The company made mostly blacksmith and plumbing tools till its demise shortly after WW2. These pipewrenches were a Ridgid Tool design made under license.
Company history here. http://hespelerproject.wordpress.com/2010/10/31/a-b-jardine-co/
Below, a pipe-threading tool made by the company:
|Canadian Machinery, 1921|