MicrobeHunter.com Microscopy Forum

Hi Nance, I think the LU looked very similar but was bigger and heavier. It was the reserch model of the time with interchangeable table and condensor block. The LG is vey common, the LU not. The LG was a sensation when it appeared on the market on 1934. The usual high quality microscope of the time...

I'm not shure whether this is a LU or LG. I only know the LG and it is a really nice microscope to use today. The ergonomics are good and the craftmanship is second to none. Nowadays you would be fired immediately when you spent time on designing an instrument with this amount of precision engineeri...

Newer eyepieces often offer a more comfortable view compared to older ones. So you might end up using an eypiece that doesn't fit perfectly from the chromatic correction but offers the most agreeable view nontheless. It's good to know and apply the theory and then just use what is good in practice. ...

I forgot two things:
object micrometer is perfect as a test target - use it with cover slip.
For old "keyhole" eyepieces a smartphone can be the perfect fit optically.

The "C" eyepieces are compensating non planar eyepieces with small field of view and little eye relief. They can also be used for strong objectives as all Zeiss Standard objectives are calculated for the same compensating factor. This was a big invention at the time. They don't make use of your Plan...

The KPL were the best corrected eyepieces. The CPL are "clinical plan" = good enough for eveyday routine use. The "C" type is the simplest. It also compensates for the objectives chromatic error but is not planar and has a small field of view. The CPL introduce a heavy field curvature that is somewh...

Here you've got a (german) description of how to make a stained blood smear slide: http://www.mikrohamburg.de/Programm/Protokoll_20161119.pdf This procedure works very well. The slide has to be especially clean. Try to find an image that shows the right handling of the second slide to draw out the b...

A well equipped microscope and a table with lots of free space for slide making, glass ware, stains etc...
It is possible to turn the binocular head around so the power cable faces away from you. Most people use their mircroscopes this way round.
Do you already have an idea what to look at?

Bob

I would like to repeat my suggestion of contacting a specialized hospital. A university with a medical branch might also work.
Often they are quite open to amateurs with in interest in their topics.

For many it is the wrong language but this is a recent and highly respected book on wood sectioning:

http://www.ihwverlag.de/index.php/allge ... 106-detail

It is not too expensive and the methods do work.

Bob

Hi John, how is your base sledge microtome doing? I'm asking because a Leitz 1300 base sledge microtom waits to be picked up by me. I wasn't looking for one but was offered it for a good price, found a remaining space for it in my room and said "Yes". It looks whether I will be able to pick it up in...

Hi Fancisco, thank you for showing this impressive line up. In Germany the angular Biolam (your second one from left) and the right of your stereo microscopes are well known. The others are scarce. I just bought a microscope like your third one from the left, see my new thread. Do you have more info...

And the rest of the pictures...

Hi together, a while ago I bought this rare LOMO microscope. I got it as a by-catch with a rare Zeiss Jena Photo head (the one to fit a binocular head plus photo tube). It obviously has been customized to someones needs with binocular tube and photo head from Zeiss Jena, Zeiss West KPL eyepieces, a ...

Hi zzffnn,

I don't know whether he speaks english but I'm shure he will do his best.

Bob

Hi Francisco, thank you for showing this interesting and rare instrument. It is always amazing to see how large and detailed the LOMO procuct portfolio was. They probably have produced very few of these instruments and it is luck to find one in more or less complete condition. If a dealer dismantles...

Thank you for posting these two special diatoms, Kurt! They are real beauties!

Did you know that you could expect this fragile species at this spot of collection?

Bob

Sorry, it is Conate x With individual made small series school equipment "inexpensive" is relative. Usually the maker is not happy with his profits on it and for the buyer it is still very expensive. I think you will get a DIY solution running quicker and cheaper than a commercially made chamber, ev...

These instruments are in a really nice condition from what I can see on the photos. If they were mine I would be very careful with restoration work not to damage the old surfaces. From my point of view there is not much to do, maybe a little bit of cleaning with dish cleaning agent and water. A whil...

Hi Hobbyst46, you might look into catalogues for school science courses. In Germany this would be Phywe or Conatec (and probably some more). I have a lightweight microtome from Japan that is made by a japanese school supplier, Uchida. There are probably comparable companies in most bigger countries....

It would be interesting to know wether this also applies to camera and microscope lenses. With very old cameras (~100 years) I had the impression that the surface of the lenses had suffered in a similar way.

Hi John, clean cover slips are an interesting topic. Some things have more aspects than it is visible in the first moment and glass objects are among them. For example it makes a difference when you move the clean coverslip through an alcohol flame, but this effect lasts only so long. Glass is also ...

The diatom looks a bit smashed. Maybe you could reduce the pressure on the slide a bit. When you make your slide upside down the distance between cover slip and slide in not so important any more. The diatoms are always where you want them, regardless of how much mountant is below. Your fixture is n...

No. 1 is 0,13 - 0,16 mm thickness (Marienfeld) Normally there is in addition water or mountant between object ond cover slip so this thickness should be just fine. My experience with cheap round cover slips from ebay was that they were up to 0,25mm thick, so completely useless. Then I bought quality...

Welcome to the forum! It's a good idea to think and inform yourself before starting this project. Many old microscopes are severely damaged by antique dealers that apply their standard bead blasting and buffing method on everything. For an old car jack this may work but on microscopes all sharp edge...

kkokkolis wrote:I mostly have technical needs, were the Stereomicroscope or even my Belomo or Emoscope are enough.

What are the objects you are going to look at?

I don't know this Olympus model, but generally it can be said that newer microscopes are more developed for easy handling while older models offer more adjustments. If you are more interested in your slides than in the instrument a newer model is probably very good. If you enjoy fine workmanship and...

Hi Eddie, when your microscope head is not centred on the stand the centering of the image would change when you turn the head on the stage. This would be an easy test. My russian scope arrived and seems to be in good condition. The black paint is probably not original but looks good. I probably kee...

When cleaning and relubricating xy stages I like it best to have the stage parts move with little friction and have damping in the controls of the stage. From my experience this gives a better feel for the movement of the slide. So the stage itself can be greased with bearing grease but the knob wou...

For disassembly you probably have to remove two screws to get a little plate on top of the focussing mechanism out of the way. You then should be able to see how the mechanism gets apart. For initial degumming it is advisable to remove all optical parts before the use of penetrating oil. Gentle appl...