INTRICATE c1880-90 SURVEYOR Surveying Inclinometer -LUDWIG TESDORPF -STUTTGART

Description: ELABORATE INTRICATE CIRCA 1880-90 SURVEYOR SURVEYING INCLINOMETER WITH MIRROR BY LUDWIG TESDORPF - STUTTGART Made of BRASS & STEEL. Needs restringing. Franz Ludwig Tesdorpf (born July 28, 1856 in Rio de Janeiro, † June 28, 1905 in Stuttgart) was a German precision engineer and entrepreneur. His father was the merchant Hermann Matthäus Tesdorpf (1833-1868) His mother Emilie Luise, née Oppenheimer (1835-1919), worked as a writer. When he was ten he came to Germany. From 1866 to 1868 he attended the Salzmann Institute in Schnepfenthal and from 1868 to 1872 the Realgymnasium in Jena. He learned the trade of precision mechanics at Carl Zeiss in Jena, where he was personally trained by Carl Zeiss. From 1876 to 1879 Tesdorpf worked as an assistant in the workshops of Max Hildebrand in Freiberg and Carl Bamberg in Berlin. Then he attended the Technical University of Karlsruhe. After completing his studies, he became managing director of the Mathematical-Mechanical Institute Gebr. Zimmer in Stuttgart. In 1882 he took over the company. Here he primarily manufactured geodetic surveying instruments such as the universal instrument, but also other scientific instruments and apparatus. At considerable expense, Tesdorpf developed geomagnetic instruments that were tested by the German South Pole Expedition and the Norwegian Northern Lights Expedition. Tesdorpf worked with well-known scholars of his time such as Max Eschenhagen and Friedrich Bidlingmaier in Berlin, Prof. Schmidt and Prof. Haussmann in Aachen and Prof. Schmidt in Stuttgart. At the suggestion of August Schmidt, professor of mathematics and physics at the Dillmann-Realgymnasium in Stuttgart and from 1896 to 1912 head of the meteorological-geophysical department of the Statistical Office in Stuttgart, seismometric devices were manufactured, in particular the Schmidt trifilar gravimeter. Under the suggestion and cooperation of the building director Carl von Bach, Tesdorpf developed precise material testing apparatus. In 1898 he had a large workshop building built in Stuttgart's Forststraße, which contained 600 square meters of work space and employed 30 to 36 workers. Tesdorpf acquired a worldwide clientele through the precision and beauty of its instruments. Tesdorpf's instruments won prizes at all exhibitions. In 1903 he was awarded the gold medal for art and science by the King of Württemberg. For many years Tesdorpf was chairman of section IX of the trade association for precision engineering and a board member of the German Society for Mechanics and Optics. In 1900 he co-organized the 11th German Mechanics' Day in Stuttgart. Since the founding of the technical school for precision engineering in Schwenningen in 1900, he has been a member of the school board. Tesdorpf was first married to Dorette, née Haas; after her death in 1887 with Elisabet, née Stettner; from both marriages he had two sons and four daughters. After his death, the workshop was taken over by the Goettingen company Sartorius in 1906. MADE OF HAND ETCHED BRASS and STEEL Has MINI - PLUMB BOB of BRASS stored underneath at one corner. Suspension thread partially missing as shown. MEASURES - 3 1/4" x 7 1/4" x 8" IN FULLY ERECT UPRIGHT POSITION. Scratches, minor scattered surface and general wear throughout consistent with age and use but overall displays nicely. Please see all photos as they are part of the description. ASK ALL QUESTIONS AS SHOWN ABOVE - SOLD "AS-IS" - NO RETURNS. PRIORITY POST SHIPPING is $35.00 in the U.S. and includes DELIVERY CONF. & INSURANCE. Includes 12.9% EBAY SELLER'S SHIPPING SURCHARGE and 12.9% SALES TAX SURCHARGE SELLERS MUST PAY EBAY. WE DO NOT SHIP BY UPS as they rip open boxes insured at $100 or more seeking to deny shipments containing antiques. ALL SHIPMENTS NORMALLY MADE THROUGH USPS - BUT WE RESERVE THE RIGHT TO SEND BY FEDERAL EXPRESS GROUND INSURED. OVERSEAS SALES IS $65.00 for REGISTERED or minimally insured AIRPOST for safe signatured delivery and easy Customs clearance. GA STATE residents or out of state must pay 8% STATE SALES TAX. GOOD LUCK! WE COMBINE SHIPPING!

Price: 775 USD

Location: Atlanta, Georgia

End Time: 2023-12-13T01:45:26.000Z

Shipping Cost: 25 USD