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Rare c1900 German Barograph Drum Barometer Wood Case Beveled 5 Glass Top 7 Days
Rare c1900 German Barograph Drum Barometer Wood Case Beveled 5 Glass Top 7 Days
Rare c1900 German Barograph Drum Barometer Wood Case Beveled 5 Glass Top 7 Days
Rare c1900 German Barograph Drum Barometer Wood Case Beveled 5 Glass Top 7 Days
Rare c1900 German Barograph Drum Barometer Wood Case Beveled 5 Glass Top 7 Days
Rare c1900 German Barograph Drum Barometer Wood Case Beveled 5 Glass Top 7 Days
Rare c1900 German Barograph Drum Barometer Wood Case Beveled 5 Glass Top 7 Days
Rare c1900 German Barograph Drum Barometer Wood Case Beveled 5 Glass Top 7 Days
Rare c1900 German Barograph Drum Barometer Wood Case Beveled 5 Glass Top 7 Days
Rare c1900 German Barograph Drum Barometer Wood Case Beveled 5 Glass Top 7 Days
Rare c1900 German Barograph Drum Barometer Wood Case Beveled 5 Glass Top 7 Days
Rare c1900 German Barograph Drum Barometer Wood Case Beveled 5 Glass Top 7 Days

Rare c1900 German Barograph Drum Barometer Wood Case Beveled 5 Glass Top 7 Days

$ 422.4

Availability: 100 in stock
  • Return shipping will be paid by: Buyer
  • Maker: German
  • Restocking Fee: No
  • All returns accepted: Returns Accepted
  • Item must be returned within: 14 Days
  • Refund will be given as: Money Back
  • Original/Reproduction: Original
  • Time Period Manufactured: Pre-1930
  • Condition: Very good condition

    Description

    Rare circa 1900 German 7 Day Drum Barograph Recorder Barometer with lift off beveled 5 glass lift off top. German diaphragm shows 7 days of the week in German but the hand made Barometer is unmarked and assumed made in Germany. Parts are made of polished Brass with Wind Up Key mechanical movement with daily and weekly circulation recordings. Mahogany Wood Case and Top are in good condition with some age related scratches. Original Glass Ink holder with Ink and 2 unopened packs of 50 Diagram sheets plus many loose extras sheets are included. See photos for size and condition.
    BAROGRAPHS:
    The Barograph is an ideal instrument to use for weather forecasting because it automatically writes a continuous record of atmospheric pressure change over a 7 day period. Changes in pressure may occur during the night and would be missed by an ordinary barometer especially if changes occur rapidly. This detailed record makes forecasting weather more accurate.
    Barometers and Barographs have pressure capsules that shrink and expand as atmospheric pressure changes. The Barograph has a mechanical linkage system that connects the changes in the pressure capsule to a pen on the end of a long arm. The pen records these changes on a piece of graph paper, like the ones included, attached to a rotating drum. Some drums are electrically powered. Most of the antique barometers are powered by clock movements usually on a 7 day cycle as this one is.
    Most of these antiques were made in the early 1900's in England or Germany [as this one was]. Very collectible and rare.
    PayPal only.