I use the Leitz more than most in my collection, but I enjoyed them all, none are the same in magnification or condenser lenses. I use the small light bulbs inserted in a plastic insulated tube on the right hand side of the base like the Wild M20.
![small vintage e. leitz binoculars small vintage e. leitz binoculars](https://a.1stdibscdn.com/archivesE/upload/1121189/f_140386721552979835894/14038672_master.jpg)
Thanks for your story on why 160 mm after years with the 170 mm like my vintage Leitz SM-LUX. The performance of my UIS2 Olympus CX31 is beyond that of the 160 mm DIN in bother European or Asian manufactured. Used Leica cameras cost several thousands of Dollars, but not microscope. in surplus Auctions in Brisbane and South San Francisco, California, U.S.A. Leitz microscopes does not have the high resale vale as Leica cameras in film or digital, I do not know why. The workmanship is quality and typical of German made.
#Small vintage e. leitz binoculars manual
It is a manual switching power supply, 120 V AC 60 Hz voltage is internally selected at the primary transformer coil. I did not like the plastic base in the Leitz Laborlux D. There was not any advantage of an inverted, takes up more space and harder to move around in different rooms to do my viewing. Both are respectable optics and mechanics from the 1980s vintage. I was outbided for the Nikon TMS and randomly ended up with the upright Leitz Laborlux D. I chose the Leitz over the Nikon TMS inverted, Wetzlar optics are better than Nikon or the same. I have some Japanese Olympus and Nikon upright compounds. Laborlux D with EF, “extra flat” 160 mm tube length objectives and the Leitz SM-LUX with metallic gray stand NPL objectives 170 mm tube length, Zeiss KF-2 with the white color stand and old gray binocular tube, gray beam splitter for the white monocular tube, and a Wild M11 in binocular tube in butter yellow color are all of my European made compound microscopes. And… you can't use Dialux eyepieces on a 170 mm microscope because the image distance would become an un acceptable 160 mm. With conventional eyepies there must be used a spacer ring to get the eyepiece diaphragm into the proper plane. And so you can use 170 mm objectives on a Dialux 20 but you have to use the Dialux 20 eyepieces. With binocular tubes which do not have a tubelenght correction for the interpupillary distances, the tube lenght changes by 10 mm. In this case the 2 mm displacement of the intermediary image has no noticeable affect on image quality." You have to use conventional eyepieces and not those of the Dialux. "Why was 150 mm image distance chosen as standard instead of 152 mm." The answer is: "Because this dimension was closer to a majority of manufacturers." "Can 160 mm objectives be used on microscopes of 170 mm tubelength?" "Yes for objectives with magnifications 16:1 and higher. In this connection, it should be realized that the difference between our objectives corrected for 160 mm and corrected for 170 mm is extremely small…" Halleluja! "The NPl fluotars and all future objectives will, of course, be made available also for our research microscopes. Makes 160 mm optics make all other Leitz microscopes obsolete.
![small vintage e. leitz binoculars small vintage e. leitz binoculars](https://www.michaeldlong.com/wp-content/uploads/2020/02/michaeldlong.com-6709-300x225.jpg)
You can use old and new objectives on old and new microscopes.
![small vintage e. leitz binoculars small vintage e. leitz binoculars](https://i.etsystatic.com/14483344/r/il/157be2/1707353578/il_fullxfull.1707353578_ky1k.jpg)
Image distance with the new Dialux 150 mm. Zeiss uses at the time an image distance of 147 mm. This is a critical dimension because a drastic departure from this distance can lead to detoriation of the image. With Leitz the location of the intermediary image is 18 mm below the upper edge of the tube or at a distance of 170 – 18=152 mm from the shoulder of the objective. So what is the definition of the mechanical tubelenght? It is measured from the shoulder of the objective to the upper edge of the tube. On second sight neither Zeiss nor Leitz were 160 mm. The standard norm should be 160 mm, Zeiss committed herself to 160 mm from early times. People with a microscope from A should be able to use objectives from B. The Standard Commision wanted uniform standard.
![small vintage e. leitz binoculars small vintage e. leitz binoculars](https://i.etsystatic.com/13762130/r/il/f515dc/3353267514/il_340x270.3353267514_k05m.jpg)
An intern memo of septemreveals it was under the pression of the German Standard Commission to go 160 mm. >Yes, you can use a lot of 170 mm objectives on a 160 mm microscope >Intern memo Leitz reveals it all Leitz came in summer 1976 with the Dialux 20 microscope and shook the microscopic world for Leitz had changed its tubelenght from 170 mm to 160 mm.