I’m not sure this is a microscope....
I’m not sure this is a microscope....
Although I use a microscope everyday as a surgical pathologist (Olympus BX43) I actually have a question regarding something my father bought at an estate sale thinking I might be interested in it. The markings read “Carl Zeiss, Jena, Nr. 2116”. Although part of it does resemble a microscope, it also has a weighted pulley system.
Does anybody know what this might be? I’ve been searching the internet for awhile and have come up empty handed. I figured microscope or not, you guys might be able to guide me in the right direction.
Thanks.
Does anybody know what this might be? I’ve been searching the internet for awhile and have come up empty handed. I figured microscope or not, you guys might be able to guide me in the right direction.
Thanks.
Re: I’m not sure this is a microscope....
Sounds interesting: But unfortunately your images are not viewableMFeely wrote:Although I use a microscope everyday as a surgical pathologist (Olympus BX43) I actually have a question regarding something my father bought at an estate sale thinking I might be interested in it. The markings read “Carl Zeiss, Jena, Nr. 2116”. Although part of it does resemble a microscope, it also has a weighted pulley system.
Does anybody know what this might be? I’ve been searching the internet for awhile and have come up empty handed. I figured microscope or not, you guys might be able to guide me in the right direction.
Thanks.
... Held hostage by Photobucket:
https://www.pcmag.com/news/354711/photo ... e-internet
MichaelG.
Too many 'projects'
Re: I’m not sure this is a microscope....
Well that’s unfortunate. It’s been awhile since I posted in a forum and I didn’t realize that had happened. I attempted to resize my photos and attach them directly.
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Re: I’m not sure this is a microscope....
Thanks for the images
I don't immediately recognise it, but there is perhaps a 'distant memory' of seeing something similar.
... I may be back.
MichaelG.
.
Edit: Have a look at this PDF ... page 113 et seq.
http://www.science-info.net/docs/zeiss/ ... 931902.pdf
... nothing identical, but I think we are getting close.
I don't immediately recognise it, but there is perhaps a 'distant memory' of seeing something similar.
... I may be back.
MichaelG.
.
Edit: Have a look at this PDF ... page 113 et seq.
http://www.science-info.net/docs/zeiss/ ... 931902.pdf
... nothing identical, but I think we are getting close.
Too many 'projects'
Re: I’m not sure this is a microscope....
Hi Michael,
when you look into the eyepiece at the side what do you see? It's tube is pointed to the central element of the instument. A scale? A thermometer?
Bob
when you look into the eyepiece at the side what do you see? It's tube is pointed to the central element of the instument. A scale? A thermometer?
Bob
Re: I’m not sure this is a microscope....
Now we’re onto something. Thanks a lot Michael. Perhaps this is a precise measuring instrument.
Bob- When you look into the eyepiece you do see the central element. This core moves up and down and you can see the movement through the eyepiece. The view through the eyepiece also displays two closely spaced parallel lines (see picture below). The view also changes when you rotate the dial on top of the eyepiece, which interestingly has upside down numerical values on it (illustrated in the first photo above).
Bob- When you look into the eyepiece you do see the central element. This core moves up and down and you can see the movement through the eyepiece. The view through the eyepiece also displays two closely spaced parallel lines (see picture below). The view also changes when you rotate the dial on top of the eyepiece, which interestingly has upside down numerical values on it (illustrated in the first photo above).
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Re: I’m not sure this is a microscope....
You could look for this instrument here:
http://www.mikroskop-online.de/Zeiss%20 ... eraete.htm
http://www.mikroskop-online.de/Zeiss%20 ... eraete.htm
Re: I’m not sure this is a microscope....
To me it reminds a measuring telescope. Many years ago, to check the level of a liquid in a presicion thermometer for example, a telescope was used. It was horizontal on a stand on the lab floor. Though I cannot say what exactly this is.
Re: I’m not sure this is a microscope....
Mystery solved. I contacted the Carl Zeiss archives and they were able to tell me it is an Abbe spherometer from 1906. It’s used for measuring lenses, commonly in the optical setting.
Thanks for everyone’s help.
Here’s a link they provided:
http://www.musoptin.com/item/sphaeromet ... 1312-1901/
Thanks for everyone’s help.
Here’s a link they provided:
http://www.musoptin.com/item/sphaeromet ... 1312-1901/
Re: I’m not sure this is a microscope....
One more interesting bit of follow-up, this specific instrument was shipped to the Spencer Lens Company of Buffalo who actually made microscopes. I had the right forum after all!
Re: I’m not sure this is a microscope....
Excellent result ... Thanks for sharing the link.MFeely wrote:Mystery solved. I contacted the Carl Zeiss archives and they were able to tell me it is an Abbe spherometer from 1906.
MichaelG.
.
PostScript: There is a description, and a helpful diagram of the device on p365 of this book:
https://ia800704.us.archive.org/25/item ... Optics.pdf
Too many 'projects'
Re: I’m not sure this is a microscope....
It's probably obvious by now, but ... As photographed, the microscope is upside down; you need to rotate it 180° to put the dial on the underside.MFeely wrote:The view also changes when you rotate the dial on top of the eyepiece, which interestingly has upside down numerical values on it (illustrated in the first photo above).
MichaelG. [getting rather envious]
Too many 'projects'
Re: I’m not sure this is a microscope....
Thanks for the link Michael. I think I'll have to print a copy of all of these findings and file them away. It's great to read an explanation of how this thing actually worked as I hadn't come across that yet. Unfortunately, it looks like my example is also missing the top ring just as the example from Zeiss is so I won't be measuring any lenses any time soon...
Yes, I immediately rotated the dial so that it was attached to the microscope from the underside as show in the link from the Zeiss archives. I did wonder though if perhaps someone at Spencer Lens Co. just found it easier to work with with the dial rotated to the top. I guess I'll never know.
This has been fantastic as like I mentioned I use a microscope everyday for work but didn't know much about the history. To find that this thing was used in my hometown at a prominent institution of microscope history here in the USA has been very fascinating. Now I just need to get my hands on a Spence Lens Co. microscope from that period to complete the story.
Yes, I immediately rotated the dial so that it was attached to the microscope from the underside as show in the link from the Zeiss archives. I did wonder though if perhaps someone at Spencer Lens Co. just found it easier to work with with the dial rotated to the top. I guess I'll never know.
This has been fantastic as like I mentioned I use a microscope everyday for work but didn't know much about the history. To find that this thing was used in my hometown at a prominent institution of microscope history here in the USA has been very fascinating. Now I just need to get my hands on a Spence Lens Co. microscope from that period to complete the story.
Re: I’m not sure this is a microscope....
A small favour, if I may ...
Could you please let me know the diameter of the top plate, and the weight of the weight.
Thanks
MichaelG
Could you please let me know the diameter of the top plate, and the weight of the weight.
Thanks
MichaelG
Too many 'projects'