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American Optical Co., Spencer Microscope.

Motorman55

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Apr 10, 2016
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South Jersey
My neighbor who just moved away and was throwing out his old college microscope. He's in his early 70's, so I'm thinking its at least 50 yeas old. All the lenses are good and all the dials and adjusters work including the lamp. Don't know what exactly I'll do with it, but thought I'd get it all cleaned up and maybe put it up on a shelf or something.

Overall its in fine shape, just needs a really good cleaning. Any recommendations on what cleaners use to clean the lenses and the knobs?
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Dave455

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Mar 19, 2013
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Sussex, England
For cleaning the knobs I’d just use a trace of spirit on a rag. Maybe a brush to clean out the knurling.

I’d be very careful cleaning the lenses. I don’t have much experience with microscopes, but in lenses generally, some of the glass compositions can be incredibly soft, and are very easily scratched.

Generally, it’s advised to start with a blower, or a soft lens brush, to remove any dust. Unfortunately, in the real world old lenses can have dirt that needs a lot more removing. A proper lens cleaning cloth and plenty of fluid are the best bet.
 

RoninB4

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Jul 22, 2020
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Under My House
I briefly worked for American Optical as a tech back the late 70's. On the bench or on the road we used Sparkle glass cleaner for the lenses unless they were coated. Not a special formula at all, straight from the grocery store shelves. Coated optics and first surface mirrors (look this up) often had a fragile surface, if was considered better to simply flood Sparkle across the lens/mirror to carry off any dust particles and NOT use a mechanical (Q-tips, cotton balls) means of cleaning. First surface mirrors are/were also often found in an optical comparator (shadow graph) which are regularly used in machine shops for precision inspection. The first surface mirror in those can/will be destroyed before your eyes if wiped off with a cotton ball. Hope this helped.
 
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Bubba Fett

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Jun 11, 2018
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I also think you should use it. I believe you can get camera adapters, so you can do microscopic photography. That might end up becoming a fun and rewarding hobby.
 

RTM

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May 13, 2019
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SF Bay Area
Mine is a low power wide field unit, Model 59M-2, and I used it for fountain pen maintenance and repair most recently. It also serves for viewing edge tools while I sharpen damaged ones.

Forget what else it got dragged in on, but we were looking at the metal structure of something vintage just for giggles, could see the line of hardened steel attached to the softer steel on an old edge tool.

I have a Celestron and some other cell phone adapter I’ve used to take pix. Something like this, both are a bit fidgety.


 
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Beerhippie

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Oct 13, 2023
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Far NE Oregon
I have a Spencer of Buffalo stereo dissecting 'scope I've used for years. It about 100 years older than yours. I need to get it out and give it a good cleaning. I also have an old Leitz binocular compound 'scope of about the same vintage. It need some optical work, but otherwise entire.
 
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