The C-Thru F450-8 Triangle is a precision drafting and drawing tool designed to create accurate 45 and 90 degree angles. Made by the reputable brand C-Thru in the United States, this 8-inch tool is perfect for engineers and designers looking to create precise and detailed drawings. With its durable construction and innovative design, the C-Thru F450-8 Triangle is a must-have for anyone in the field of engineering or drafting.