Check the listing for details. Polar Planimeter Type KP-2. Condition: Used. Listed at 75.00 USD. The Polar Planimeter Type KP-2 is a vintage surveying equipment dating back to the 1930s. This collectible item falls under the category of science and medicine, specifically in the field of engineering. With its precise measurements and intricate design, this planimeter was likely used in various scientific and engineering applications during its time. It serves as a valuable piece of historical equipment that showcases the advancements in measurement technology in the mid-20th century.