Unsold$1,085.00Buy It Nowor Best Offer, Click to see shipping cost, eBay Money Back Guarantee
Seller:supermall(3,109)100%, Location:Cincinnati, Ohio, Ships to: Worldwide, Item:362008470267Up for auction at the Grand Antique Mall, located in Cincinnati, Ohio is an antique, compound, monocular microscope from 1927 and its original case and accessories made by Ernst Leitz in Wetzlar, Germany. Fine working condition. Serial number, 252928, indicates the microscope was created in 1927. Original case also has the same serial number on its door. This scientific instrument comes with its original case; the lenses can be stored in their respective canisters. The microscope is made of brass and silver metals, and the lacquered black base is in the shape of a horse shoe. Hallmarks including Ernst Leitz Wetzlar and the serial number are on the front of the microscope; the serial number is also on the case door, revealing that the wooden case was specifically designed for this particular microscope. The case itself is made of solid wood. Inside are two wooden boxes with sliding lids; the larger box is removable. 20 slides are included. Mechanical engineer Ernst Leitz began work at the Kellner Institute in Wetlzar, Germany in 1864; in five years, Leitz controlled the firm and renamed it after himself. Leitz microscopes were first to include a variety of technical improvements that increased their quality, reputation and popularity; by the late 19th century, the company was known and respected worldwide. Dimensions: Scope: 11.25” Tall (without tube) x 5” Wide x 7” Deep Mirror: 2” Diameter Slide Rest: 4.5” Square Case: 8.25” Tall x 13.25” Wide x 7” Deep Weight: 15 lbs. All parts work well. Perfect for collectors of scientific instruments. A gift to celebrate a science loving student or teacher, as well as a person graduating in biology, medicine, or another microscope-necessary field. Questions? Please send us a message, and we will promptly reply.Condition:Top condition for age and use for microscope. Very Good condition for original case -- only the exterior shows age wear. Circa: 1927. Serial number: 252928. All parts work well. Clean and odorless from nonsmoking environment. Minor age- and use-related wear Mirror light has surface scratches but this does not affect the keen reflection that lights the slide. The leather handle atop the wooden carrying is not attached on the left side: One would carry the case from the bottom. The case does have original hardware, dovetailing, and interior slide-top boxes, the larger one containing 20 slides. Refer to written description and photos for more information., Original/Reproduction:Original, Maker:ERNST LEITZ WETZLAR
PicClick InsightsLeitz polarizing microscope SIGNED: 'Ernst Leitz, Wetzlar' SERIAL NUMBER: 'No337916'.
for 'Antique ERNST LEITZ WETZLAR Microscope #252928. Original Case + Accessories 1927
'PicClick Exclusive- Popularity - 0 views, 0 views per day, 869 days on eBay. 0 sold, 1 available.
- Price -
- Seller - 3,109+ items sold. 0% negative feedback. Top-Rated Seller! Ships on time with tracking, 0 problems with past sales.
0 views, 0 views per day, 869 days on eBay. 0 sold, 1 available.
3,109+ items sold. 0% negative feedback. Top-Rated Seller! Ships on time with tracking, 0 problems with past sales.
Recent Feedback
Antique ERNST LEITZ WETZLAR Microscope #252928. Original Case + Accessories 1927
'PicClick ExclusiveZoom Thumbnails
PicClick Exclusive'>
PicClick Exclusive'>
Ernst Leitz GmbH was a German corporation now divided into three independent companies:
- Leica Camera, manufacturer of camera and sport optics equipment
- Leica Geosystems, manufacturer of geodetic equipment
- Leica Microsystems, manufacturer of microscopes and owner of the Leica brand
History[edit]
Kolorimeter.
Carl Kellner, mechanic and self-taught mathematician, published his treatise Das orthoskopische Ocular, eine neu erfundene achromatische Linsencombination (The orthoscopic ocular, a newly invented achromatic lens combination) in 1849, describing a new optical formula he had developed. The ocular was capable of rendering an image with correct perspective, free of the distortions typical of other microscopes at that time. Following his early death on 13 May 1855, his widow continued the business he had left behind, the 'Optisches Institut' (optical institute).
The fine mechanic Ernst Leitz I. (1843–1920) from Baden arrived at Wetzlar in 1864 and entered service at the Optisches Institut. He was trained as an instrument maker for physical and chemical apparatus and had several years' experience making watches in Switzerland. Initially, Leitz was a part shareholder of the business (in 1865), but took over as sole owner in 1869 and continued it under his own name. Leitz introduced serial production, raising sales volume rapidly after 1871. Consulting with his clients, he continued to refine the microscopes to their needs.
The microscopes were produced for biomedical as well as industrial purposes, including mineralogy. Leitz microscopes improved on other models of their day in several ways, including lighting and optics, particularly with orthoscopic eyepieces. By 1880, the company had reached an annual production numbering 500. 1887 the 10,000th microscope was shipped, four years later the 20,000th, and in 1899 the 50,000th was completed. Bacteriologist Robert Koch was given the company's 100,000th microscope in 1907.[1]Paul Ehrlich, inventor of chemotherapy, received the 150,000th one, and Nobel laureate Gerhard Domagk, discoverer of sulfonamides the 400,000th Leica instrument.
By the end of the 19th century, the company had a worldwide reputation. Its product range by this point included several optical instruments besides microscopes. At the beginning of the new century, Leitz introduced eight-hour days and founded a health insurance society for employees. 1913 it introduced a first fully functional binocular microscope. After the first world war, the economic situation of Leitz was dire. Ernst Leitz died in July 1920 and the leadership of the company passed to his son, Ernst Leitz II.
Around 1920 Leitz employed around 1400 people, and by 1956, 6000. In 1924 Ernst Leitz II. decided that in spite of the weak economy, the apparatus designed by his employee Oskar Barnack should enter serial production.
As part of working on cinematic gear, Barnack had customised 35mm film for use in photographic cameras. Since he felt a ratio of 2:3 to be aesthetic, the resulting format was 24mm in height and 36mm wide. Around this he constructed a camera designed for casual snapshots. This design formed the basis of the original Leica camera, as presented at the spring fair 1925 in Leipzig. The success of that camera was enormous and well beyond expectation.
In 1925 the first polarising microscope was made, and in 1931 the first comparative macroscope for criminological applications. In 1932, Leitz pioneered a fluorescent microscope, and three years later a photometer developed by Max Berek.
In the late 1930s, Ernst Leitz II. assisted a number of Jewish employees in fleeing Germany. In 1942, the Ernst Leitz GmbH employed a total of 195 foreign citizens. By January 1945, there were 989 forced laborers, 643 of them 'Ostarbeiter', predominantly from Ukraine, and 316 'Westarbeiter' from France and the Benelux.[2]
Besides cameras and microscopes, Leitz developed further optical products that would define the mid-20th century, such as slide projectors of the 'Prado' series and Leitz episcopes that were frequently used in schools.
One by one, the three sons (Ludwig, Ernst and Günther) of Ernst Leitz II. began work at the company. Having remained intact through World War II, the production facilities could be restarted immediately after the war ended. In 1948, a separate development lab for optical glass was added, and from 1953, the design of microscope optics was computer-assisted. Upon the death of their father in 1956, the three sons jointly assumed leadership of the company.
References[edit]
- ^Leica MicrosystemsArchived 2009-08-09 at the Wayback Machine, accessed 23rd of August 2015.
- ^See footnote 20 in Porezag, Karsten: Ernst Leitz aus Wetzlar und die Juden – Mythos und Fakten zur Emigration deutscher Juden 1933–1941Archived 2016-03-04 at the Wayback Machine, www.porezag.de, accessed 23 August 2015.
Retrieved from 'https://en.wikipedia.org/w/index.php?title=Ernst_Leitz_GmbH&oldid=910251093'