{"product_id":"a-ott-kempten-typ-10-poolplanimeter-ahrend-set-in-originele-kist","title":"A. Ott Kempten Typ 10 Polar Planimeter – Ahrend Set in Original Case\n","description":"Discover a remarkable piece of German mathematical precision with this A. Ott Kempten Typ 10 polar planimeter set. Made in the heart of Bavaria by instrument maker A. Ott, the Typ 10 represents a fascinating chapter in the history of analog area measurement. Engineers, cartographers and architects used this ingenious mechanical instrument to calculate the area of irregular shapes on maps and blueprints.\n\nThis particular example is a beautiful collector’s piece. According to the seller, it is an all-matching set, with serial number 85039 appearing on the instrument and its accompanying original components and documents. The set includes a metal checking strip and five authentic wooden scale rulers. The accompanying paper tags and calculation table add to its historical appeal and are described by the seller as original factory certificates.\n\nThe ensemble has been beautifully preserved in its original transport case with a deep green velvet interior. A brass dealer plate on the front bears the name of the well-known Dutch distributor Ahrend. The black exterior covering shows light, characterful storage wear and age-related marks, reflecting the set’s decades of history and completing its authentic vintage appearance.\n\nA particularly attractive set combining scientific history with industrial mid-century design.\n\nSpecifications\n\nManufacturer: A. Ott Kempten, Bavaria, Germany\nModel: Polar Planimeter Typ 10\nSerial number: 85039; instrument and documents described by the seller as all-matching\nEstimated date according to the seller: circa 1958–1961, mid-century\nIncluded: five wooden scale rulers, metal checking strip, accompanying original documents and original transport case\nCase dimensions: approximately 24 × 9.5 × 5 cm\nWeight: 580 grams\n\nCondition\n\nDescribed by the seller as being in exceptionally attractive and complete condition. The precision mechanism is very well preserved, and the case interior is in excellent condition. The exterior covering shows light, normal age-related marks; please see the photographs. The mechanism moves smoothly, but the instrument has not been tested further. Calibration and measurement accuracy have not been verified.\n\nOnly one example of this set is available. Tracked shipping is calculated separately.\n","brand":"A. Ott Kempten","offers":[{"title":"Default Title","offer_id":59305315565832,"sku":null,"price":295.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1056\/0336\/7176\/files\/12348.jpg?v=1793442358","url":"https:\/\/continentalvintage.com\/products\/a-ott-kempten-typ-10-poolplanimeter-ahrend-set-in-originele-kist","provider":"continentalvintage.com","version":"1.0","type":"link"}