Glass slides of unknown engineering works

[youngtug]

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[youngtug]

More;

[youngtug]

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[youngtug]

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[youngtug]

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[alanmack]

YT,
     Some of the latest ones you've posted have a certain particular "blur" about them. I don't know whether anyone has said this before but I wonder if some of the original images were extracted from a (movie) film. You might want to contact the Bradford Museum or some other industrial film archive.

Of course, it may just be an artefact of the copying/scanning method you've employed so I apologise in advance for my daft idea. 

Alan

[youngtug]

I am afraid it is a result of my use of the scanner that results in a blur. They are presentation slides meant to go with a lecture or suchlike. The thing I don't know is, what firm/manufacturer it was and when exactly. We have had some good ideas of date put forward and I think the general belief is that it was Rolls Royce, but where. Maybe someone from the photos will get recognized, although with my standard of scanning that might be a forlorn hope.

[still_looking]

Do you have some sort of slide holder? I've tried scanning similar items before but the focus always ends up on the paper covered edge rather than the image. Photographing them is an alternative apparently but you need a good light source.

[youngtug]

Might be able to use them has a negative with photographic paper, a bit like the contact strips that used to be done with 35mm film. Unnecessary though,