The Trammel Bar 26-inch Drafting Instrument is a vintage engineering tool designed for precise and accurate drafting tasks. This collectible item from the 1930s-1960s is a classic piece of equipment that is still in use today due to its durability and functionality. With a sturdy construction and a length of 26 inches, this drafting instrument is perfect for engineers and draftsmen who appreciate traditional drafting methods. The Trammel Bar embodies the craftsmanship and attention to detail that were essential in the field of engineering during the mid-20th century.