Need help to positively identify Leitz stand - Laborlux-Pol ?

[Dushan Grujich]

Hello!

I need help in positively identifying my newly acquired Leitz polarising microscope. It appears to be a Laborlux-Pol IIIa stand. With so many variances I am not sure about it. I am including few images that can help identify it.

The base of the 'scop[e is 220 mm  long, it is 280 mm tall with out the P11 tubus. It has removable turret for four objectives, each can be centred separately. The base has built in illuminator with elaborate collector consisting of four elements, however there is no field diaphragm. It came with polarising flip top condenser Nr. 54, with top lenses NA 0.90 and NA 1.40.

A large number of objectives came with the 'scope plus a number of other accessories, some as yet not identified, but that ought to be another topic.

Cheers

Dushan

[purkinje]

Hello Dushan,
for me it is a Laborlux-Pol too, (without III or IIIa, these numbers were only used for the ordinary Laborlux variants)
My decision is supported  by exclusion, it is definitively not a KM-Lux, SM-Pol, Dialux-Pol of this period of Leitz Pol microscopes.
It would be interesting to see the other parts too 
Best regards

[Dushan Grujich]

Hello Stefan!

Thanks for the reply.

I have managed to shoot some images of the stuff that came along with the 'scope, including the objectives. There are three microscope accessory boxes, two are larger and identical with pretty much the same content, and one smaller (not small) which seems to be fitting the microscope wooden case. Then there are five dedicated boxes each with an accessory e.g. mechanical stage Nr. 137 in near mint condition (for an older Leitz 'scope), Drawing attachment, Leitz microscope photometer, a box with incomplete Wright eyepiece, and one unknown set of accessories.

I am still sorting things out and will photograph the rest as I get time to do so.

Cheers

Dushan


First the list of the objectives, BTW, there are two complete sets of TL 170 objectives.


TL170 P

3.5/0.10 170/-
10/0.25 170-
25/0.50 170/0.17
45/0.65 170/0.17
50/0.85 170/0.17
63/0.85 170/0.17
100/1.30 170/0.17 Oel

TL215 P

5.6/0.15 215/-
12.5/0.25 215/0 Oel+W
25/0.65 215/0 Oel+W
45/0.58 215/0 Fl
60/0.95 215/0 Fl Oel
1/7 Fl 215/0 Fl Oel
105/1.32 215/0 Fl Oel
16.5/0.40 215/0

Ultropak P

3.8/0.12
6.5/0.18
11/0.25
22/0.45
50/0.65

[Dushan Grujich]

Here are some more interesting items, at least interesting to me.

The first one I have managed to identify, the second one is still an unknown, although I suspect it may be Zeiss, not Leitz. The third item seems to be an adjustable ocular, but where it is supposed to fit I have no idea, diameter is 28.0 mm.

Cheers

Dushan

[Klaus Henkel]

So also sieht ein "kleines Pol" von Leitz-Wetzlar mit dem allernotwendigsten Zubehör aus. Ich glaube, sowas habe ich noch gar nicht ... Hmmm.

KH

[Dushan Grujich]

A question.

Image below shows Polarising Condenser Nr.54 exchangeable flip top elements, NA 0.90 and NA 1.40 and a lambda quarter retardation plate (encircled in red) that screws instead of the top element.

What does it accomplish by being placed there?

Cheers

Dushan

[olaf.med]

Hi Dushan,

Congratulations for this absolutely outstanding set of accessories for the Laborlux. Amongst more standard type items, you are the happy owner of a Berek photometer:



and sliders for the Wright ocular:



and a Kleins' loupe for magnifying interference figures of crystals in polarized light:



Best regards,

Olaf

[Dushan Grujich]

Hello!

Not too long ago I acquired a NOS Zeiss Cardioid DF condenser NA 1.05. It came equipped with 39.5 mm mount, which does not fit any of my 'scopes so it got pushed back on a shelf almost forgotten about. Zeiss Nf stand has one on the revolving turret part of the Pancratic condenser system, and I already had the Reichert DF condenser.





My acquisition of Leitz Laborlux-Pol microscope brought a Leitz DF condenser carrier with a slider but condenser was missing.



Well, I decided to do something about it, already having an unused DF cardioid condenser, so I turned an adapter in lathe with a male and female RMS thread on its ends. One end was screwed into the condenser carrier and into the other I screwed the DF cardioid condenser cell in.





It was a quick job that has provided Laborlux with darkfield capability.

The result is shown below, first image bright-field taken with Leitz 50/0.85 170/0.17 of Pleurosigma Angulatum - 8 Form test slide by Klaus D. Kemp Both images were taken with a simple 1.3 Mp CMOS sensor eyepiece which plugs in to the tubus and has no relay lens in it. Primitive, but it works, somehow.



and a dark-field image of the same object but with a Zeiss Cardioid Condenser cell mounted in Leitz slider.



Cheers

Dushan