1/6/2023 0 Comments E leitz wetzlar projector![]() The company of Ernst Leitz had its origin in the Optical Institute founded by Karl Kellner in Wetzlar, Germany. The earlier Leitz trade catalogues give the date of establishment as 1850 but by the early twentieth century, Leitz publications put the date at 1849. After producing slide-projectors for more than 80 years with many. By presenting the Uleja - projector in 1926 the Ernst-Leitz/ Wetzlar Company offered the worldwide first mass-produced projector for 35mm-film, one year after presenting the first 35mm-camera called Leica. Telescopes were the main product of the early company, but in the 1850s, microscopes became the principal product. A virtual museum of Leitz- and Leica-slide projectors. In 1855, Kellner died at age 29 of tuberculosis and his partner Friedrich Christian Belthle took over the workshop. The company became known as the Optical Institute Kellner and Belthle. In 1865, Belthle hired an engineer, Ernst Leitz (1843-1920), who became his partner a year later. Leitz took over the company upon Belthle's death in 1869, and renamed it the Optical Institute of Ernst Leitz (Optischen Institut von Ernst Leitz). With the outbreak of the Franco-Prussian War in 1870, Leitz had a rough time his first year. Even so, he was able to ride the wave of an expanding market for microscopes. One innovation he made was to ramp up production and quality by switching away from the slow, labor-intensive manufacturing by hand to serial manufacturing. ![]() #Ernst leitz wetzlar microscope 1921 24 serial# This production method became the industry standard and made microscopes more reliable for scientific research.īetween 18, the Leitz company introduced still projectors, cinematic projectors, binoculars, and other optical equipment to their line of goods.Ī sales office was opened in New York City in 1892, and later became known as E. By 1910, the Leitz company was producing 9000 microscopes per year and had a workforce of 950 people. In 1911 Oskar Barnack (1879-1936) was hired by Ernst Leitz with the idea of designing an easily portable camera. Max Berek (1886-1949) joined the Ernst Leitz company after he had finished his studies in mathematics and mineralogy in Berlin. He mathematically designed the first Leitz camera lens, a 50mm anastigmat. In 1913, Barnack invented the 35mm camera using the new lens system. 12 ½ tall with base 6 ¾x 4 ¾ Wooden case is 13 ½ x 8 7/8 x 6 ¾ Ernst Leitz Wetzlar Eyepieces include: 1. #Ernst leitz wetzlar microscope 1921 24 serial# Ernst Leitz Wetzlar Microscope 350503 w Eyepieces Objectives Case Germany c 1955.
0 Comments
1/6/2023 0 Comments Uninstall extensis fontsThere’s no option to pre-select a font before you begin writing your document. The fonts menu will appear on the right-hand side of your document. Return to Add-ons and select Extensis Fonts from the dropdown menu.After selecting the extension, press Install.You can also select another third-party font extension here. Search for Extensis Fonts in the Search apps bar.From the drop-down, select Get Add-ons.In your Google Docs document, select Add-ons in the toolbar.To install this (or another third-party font add-on): There are a few options available, but one option is Extensis Fonts. While there’s no way to upload a font to Google Docs, you can access others by adding extensions to the application. If you’re not satisfied with the fonts Google has to offer, then you’ll need to insert third-party fonts instead. ![]() Add New Google Docs Fonts with Extensions To start using a new font, return to the toolbar menu, select the downward arrow, and scroll through the drop-down menu to find the font you’d like to use. If you want to add several fonts, you’ll need to manually select each one, which is cumbersome. Unfortunately, there’s no option to select multiple fonts at once.
|
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |