A. Ott Kempten Typ 10 polar planimeter set in its original green velvet-lined case with wooden scale rulers and documents

A. Ott Kempten Typ 10 Polar Planimeter – Ahrend Set in Original Case

€295,00 EUR
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A. Ott Kempten Typ 10 polar planimeter set in its original green velvet-lined case with wooden scale rulers and documents
  • A. Ott Kempten Typ 10 polar planimeter set in its original green velvet-lined case with wooden scale rulers and documents
  • Close-up of the brass Ahrend dealer plate on the original black planimeter case
  • Five wooden scale rulers with measurement markings supplied with the A. Ott Kempten Typ 10 polar planimeter
  • A. Ott Kempten Typ 10 polar planimeter showing the tracing arm, measuring mechanism and weighted pole arm
  • Close-up of the A. Ott polar planimeter measuring wheel, graduated dial and metal mechanism
  • Original OTT planimeter identification tag and metal checking strip marked with serial number 85039
  • A. Ott Kempten Bayern maker’s mark on the planimeter arm with a close-up of the tracing point assembly
  • Original planimeter calculation table showing scale ratios, vernier values and handwritten instrument data
  • Closed original black transport case for the A. Ott Kempten Typ 10 polar planimeter with age-related wear
  • A. Ott Kempten Typ 10 polar planimeter set in its original green velvet-lined case with wooden scale rulers and documents
  • Close-up of the brass Ahrend dealer plate on the original black planimeter case
  • Five wooden scale rulers with measurement markings supplied with the A. Ott Kempten Typ 10 polar planimeter
  • A. Ott Kempten Typ 10 polar planimeter showing the tracing arm, measuring mechanism and weighted pole arm
  • Close-up of the A. Ott polar planimeter measuring wheel, graduated dial and metal mechanism
  • Original OTT planimeter identification tag and metal checking strip marked with serial number 85039
  • A. Ott Kempten Bayern maker’s mark on the planimeter arm with a close-up of the tracing point assembly
  • Original planimeter calculation table showing scale ratios, vernier values and handwritten instrument data
  • Closed original black transport case for the A. Ott Kempten Typ 10 polar planimeter with age-related wear
A. Ott Kempten Typ 10 Polar Planimeter – Ahrend Set in Original Case

A. Ott Kempten Typ 10 Polar Planimeter – Ahrend Set in Original Case

€295,00 EUR
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. This 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. The 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. A particularly attractive set combining scientific history with industrial mid-century design. Specifications Manufacturer: A. Ott Kempten, Bavaria, Germany Model: Polar Planimeter Typ 10 Serial number: 85039; instrument and documents described by the seller as all-matching Estimated date according to the seller: circa 1958–1961, mid-century Included: five wooden scale rulers, metal checking strip, accompanying original documents and original transport case Case dimensions: approximately 24 × 9.5 × 5 cm Weight: 580 grams Condition Described 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. Only one example of this set is available. Tracked shipping is calculated separately.

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