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Need replacement part to repair student science used microscope mfg'd in Maryland 1960s by Perfect,model 804: the mirror. Purchased @ flea market 'as is', inoperable w/out light-reflecting mirror assembly.Optics appear fine, magnification 50X thru 750X. Appreciate any assist in restoring good quality 'scope.

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I need some parts replaced


If it's a brand name and less than 7 years old you can see if parts are available by googling the brand name including the model number & the word parts. Don't be surprised if the parts & shipping cost more than the oven. Good luck. The voice of experience.

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I have purchased many different computer cords from stores, flea markets, and yard sales. Sometimes, you can find a small computer repair shop in your local area that will help you with the cords you might need and if you are really lucky, they might give you one or at least have a used cord to sell you. I know power cables can run 10 to 25 dollars retail, but I have purchased them for a little as a dollar from yard sales.

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Edu science 600x microscope: no instruction manual and I cannot see anything through the lens (only a blurred blue light). What must I do to be able to see something ? Thx


Well I have the instruction manual, but it is not too helpful. When I was a child I put fleas and ants on the slides, but I guess this microscope is different. Here is what my manual says.
How to make a prepared slide: If the given sample is not thin and transparent, it cannot be observed by the microscope as the light from the reflector or the light source does not pass through it. Fibers, pollen, wool, or salt can be observed easily and a cover glass is optional. Clear samples are stained first with a drop or 2 of methylene blue, Eosin or other dying solutions (not included).
1. TEMPORARY MOUNT: Wipe the slide and cover glass clean. Slice a thin sample with the micro-slicer (blade is very sharp...adult supervision). Pick up the sample with tweezers and put it on the center part of the glass slide. Put one drop of water on the sample using the needle that came with your kit.
2.PERMANENT MOUNT:Proceed as above, however, before covering the slide with the cover glass, add a few drops of gum media (not included, available at the store) or Canada balsam solution or transparent adhesive glue with a disecting needle to the slide. Push down on the cover glass with the tweezers to fix it in place and leave to dry for a day.
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1.Pour a small amout of brine shrimp eggs into the petri dish.
2.Add enough water so that the eggs are submerged and add just a dash of table salt.
3.Place the petri dish in a well lit area (under a lamp with a 60 watt bulb is good, for 24 hours).
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I have inherited a Nikon 83988 microscope with a transformer. I know nothing about this; I have no manual. I think there may be bits missing (there is no lamp for example). When I plug in the...


I think the number you gave is the microscope serial number, to hope to get help you need to find the model number so people can help. At least post a picture. In general the microscope needs a light source to be bright enough to use. The transformer is meant to provide power to the light. If you use the microscope with a light shining through the object held by a glass slide then the light is below the stage which holds the object. Sometimes on simpler microscopes they have a mirror below the stage and you shine a bright light beam into the mirror and must adjust the angle to reflect the light through the slide. In more complex systems the light is built into the microscope. For opaque objects you must shine the light from above onto the object. If you can't find the official Nikon light source to connect to the transformer, you may be able to get non Nikon light sources. For my stereo microscope for example, I use a LED ring-light I bought on ebay for ~$25. This lights the objects from above and fits around the microscope tube just above the stage.

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I just purchased an edu science 102mm telecope. I


The end with the focuser. Then put the eyepiece with the largest number written on it into the focuser. I believe this model is a REFLECTOR, if it is there is a mirror in the bottom of the scope.

REFRACTORS have a lens in the front of the scope.

See this:
http://www.texasastro.org/telescope.php

Then read my Frequently Asked Questions TIP on my profile page. The picture you selected shows a REFRACTOR telescope.

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