The Antique Heavy Brass Parallel Rolling Rule is a rare and collectible drafting tool from the Victorian era, made in the United Kingdom by W.H. Harling Co. London England. This unique instrument, measuring 18 inches in length, is crafted from brass and comes with a fitted mahogany wood case. With its intricate design and historical significance, this brass parallel rolling rule would be a valuable addition to any collection of antique drafting tools or surveying equipment.