(Based on Wikipedia Article, with Uk specific info to be added, Links reformated, and models listed) The Euclid Company of Ohio was a company specialized in heavy plant for earthmoving, namely dump trucks and Motor-scrapers, that operated from the United States of America from the 1920s to the 1950s, then it was purchased by General Motors and became a division. Later on it was sold to Hitachi, Ltd of Japan. Now Euclid is a section of Volvo.