MicrobeHunter.com Microscopy Forum

Follow Tom Jones' suggestions. He's spot on. (See the pun?)

lorez

Those look pretty good, some photos are expected.

Once, I heard some discussion about a black margin around the central disc that would enhance contrast, but I never tried it.

You've motivated me to get creative.

lorez

You should use the ESB you have specified.

My LED "kit" has a circuit board, potentiometer, and 3W LED. It has leads for the switch so you can use the existing switch. You can find equivalent items on the web. The 410 is an easy frame to work within because it is relatively large/huge.

lorez

I've had good success replacing the original lighting system with a 3W LED. There is plenty of room for everything and it is not a difficult job. I've done well over 100 retrofits on a wide variety of scopes. The 3W LED is a suitable replacement for systems up to 30W halogen.

lorez

Where is this model available ?

lorez2

I always liked the 410 series because they were/are easy to use and had good optics. As time passed the presence of a lot of plastic began to show problems where there were no problems in the series 10. With the abundance of creative genius in this group and more and more techno-wizardry any deficie...

Very nicely done.

lorez

The links offered some good information, but did not get to the parfocal operations (at least those I saw). I stored all my equipment many years ago and have not worked on a B&L since... I will dig into the archives to see what I can uncover. There are a few special fixtures, centering eyepieces and...

The objective cells are no longer properly positioned on the slide bars. Until this is done, no other adjustments are going to have any effect.

lorez

If what Scarodactyl suggests does not solve the problem, it may be that the objective cells are no longer properly positioned on the slide bars. There were fixtures and jigs available that would facilitate the process, but that was long, long ago.

lorez2

Today was another day of restoration and again, no photos. The scope of the day was a Yale, made in Japan in the early 60s (comparing to similar instruments of known origin) and an exceptionally nice specimen. The scope is a monocular (draw tube) with a four objective turret, a 1.3 NA condenser, and...

I've been working on "the collection" and I enjoyed the day by doing a complete refurbishing of a 1951 American Optical N15MLHW medical microscope. It was encouraging to see that a little (make that a lot of) work could restore this microscope to what could be new working condition. I said "could be...

I know only one group well enough to speak to their age and most are on the older side (with me). They are getting some interest from some younger folks and that is necessary to keep the group going.

lorez

Alexander,

the style of the scope is compatible with B&L and AO models in the early to mid 1920s.

I know there was no connection among the companies, other than the friendly peeking in the other's closet

lorez

Thanks for the list.

The number of the scope is N2225805.

This does not seem to fit the list, but the style of the scope is compatible with B&L and AO models in the early to mid 1920s. The list says SN 222180 is 1924

lorez

Hi all,

Does anyone have a link to a list of Leitz Wetzla rmicroscope serial numbers ?

Thanks,

lorez

Apo and woyj, Great points. Apo, I do not know anyone nearby who has the 'expertise' and none of my 'knowledgeable' colleagues are interested. Their solution is the dumpster. I need to be discrete so my lovely wife will not discover why we could never afford a new dishwasher. Woyj, you are absolutel...

"For those willing to stick with it, " are the guiding words for any successful endeavor. I got a nice little microscope when I was ten and had great "scientific fun" with it for awhile and then other life activities got in the way. The interest was just dormant and now, many years later, I'm faced ...

I'm replying to myself. After saying I know only one other microscope hobbyist I should note that I was considering only my immediate neighborhood. Globally, I am blessed to know many, many, many.

lorez

Thanks, all for the discussion and ideas. Observations regarding age and frequency are spot-on. Other than those who use microscopes professionally I know only one other who is a hobbyist.. I've looked into donations to schools, universities, libraries, etc., and there always seem to be other elemen...

To those of you who are OLD and have microscope collections of any magnitude that warrant more thoughtful disposition than a dumpster. What are your plans ?

It has been suggested that I think about this issue before I croak.

lorez2

In my "never to be humble" opinion, the Galen II is one of the best microscopes in its class, but you know that. I have converted quite a few to LED, but I have a 3W kit that allows for dimming and it is a big improvement. Keep the grandson involved and when he's ready for his own microscope give me...

I have several, many, actually, of the scopes being discussed in this thread. Send me a message if you would like specifics.

lorez2

Tom Jones and PeteM have offered sound advice, based upon a great deal of experience .

I have a couple of BH2 scopes that could be configured as you need them, but I may not have all of what you want.

If you are in the USA and are interested, send me a note.

lorez2

I worked on a lot of these back when they were a current catalog item.... , but have long since lost the service manuals. The manuals were real books.

Pete's advice is sound. Good tools and a bit of organization at the work bench will serve you well.

lorez

Just wait until you have 160 microscopes, but your wife has run away and taken your electric train set with her.

lorez2

You may find that Denny's has a problem with a microscope on one to their tables. I delivered a microscope to a client, long ago, and when I took it out of the box to show him some things Denny's people were close-by with many questions... such as, "are you from the health department"? Just for more...

I think you are making a lateral move. I know nothing about your circumstances so I can say only what I would do, if I had a limited budget. I would save my $$ for a Nikon E series or and Olympus BX. Quality to price ratio is very good and there are tons of accessories available. I just happen to ha...

Many years ago I had a set of jigs for positioning the prisms, but it has been a long time since I worked on (or even seen) one.

I wish you all the best in your endeavor.

I'll take a B&L stereo 4 any day.

lorez2

Very nice.

lorez2