This collectible engineering tool from the brand Dietzgen is a must-have for any science or drafting enthusiast. The model D1802, manufactured from 1930 to now, showcases the superb craftsmanship of the unknown country or region where it was made. The item comes with a sleek case, adding to its aesthetic value as a valuable addition to any collection. This Dietzgen Polar Planimeter is sure to impress and will be a great conversation starter for those who appreciate rare and unique items.