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Natural Science Forum / Physics / Optics / December 2004Advice about Prior microscope
I wonder if any of you are familiar with this microscope, which I've just bought on ebay. The guy who sold me it doesn't seem to want to answer my his emails - can't blame him I suppose. It's made by Prior. It has two eyepiece lenses, x6 & x10; and three object lenses, x4, x10 & x40. It illuminates from the mains and has a black disc which give three illumination settings. I can't see a model number on it anywhere. It seems to work fine, even for somebody who's never used one before. The three object lenses are on a sort of turret, which rotates very freely about the axis of whichever object lense is being used, moving very slightly the position of that lense - I was wondering if that was supposed to happen? I suppose it is. Also, the object lenses are switched by rotating around the turret, and are kept in place by a clip which clicks into little grooves around the edge. The object lense is quite difficult to change because there is nothing to grip on to in order to move them; the mechanism is very stiff and would rather move about the aforementioned freely revolving axis. Can anybody make sense of what I'm asking: Why is it so difficult to change the object lense: there isn't anything to grip on to, and the turret would rather revolve about the the axis of whichever object lense is in position. Peter Prior is a small manufacturer with offices in UK and USA See http://www.prior.com/us/products/product.html The company is still in business and it should be possible for you to get all the information from them directly. For contact infromation see http://www.prior.com/us/contact.html Aaron >I wonder if any of you are familiar with this microscope, which I've just >bought on ebay. The guy who sold me it doesn't seem to want to answer my his [quoted text clipped - 20 lines] > >Peter Contact Prior! What a good idea! I'll do that forthwith. Thank you. Peter > Prior is a small manufacturer with offices in UK and USA > [quoted text clipped - 43 lines] >> >>Peter >I wonder if any of you are familiar with this microscope, which I've just >bought on ebay. The guy who sold me it doesn't seem to want to answer my his [quoted text clipped - 20 lines] > >Peter As a prior Prior dealer, I have two views regarding Prior. Their automated stages (E103, et. al.) are very good. If it works when delivered, all is well. If any factory service is needed, this is a problem. I would not engage any Prior compound or stereo microscope, IMO. Oly, Nikon, Leica are better options IMO. I would avoid Zeiss due to poor long term support. Gary Gaugler, Ph.D. Microtechnics, Inc. Granite Bay, CA 95746 916.791.8191 gary@microtechnics dot com > >I wonder if any of you are familiar with this microscope, which I've just > >bought on ebay. The guy who sold me it doesn't seem to want to answer my his > >emails - can't blame him I suppose.................... I'm not an expert, but it sounds like you have two problems: #1)--when you say each lens rotates around its axis, you may be screwing the lens in-or-out of its mount, which is not an intended adjustmentment. The lens should be tightened firmly, but not excssively--finger pressure is usually sufficient. #2)---The turret is hard to rotate: this is probably due to hardening of the lubricant inside the turret-sometimes lubricant can harden to a varnish-like substance, acting more like glue than a lubricant. The difficulty may also be caused by physical damage, evidence of which might be apparent on the outside-dents, scratches, etc. Cleaning or replaceing the turret is not particularly difficult, but, like most things, you'd better know what you're doing and have supplies available, or you risk trouble. Good Luck!! Bob Marable. Sorry Bob, I've just come back to this group to enquire about another matter, and noticed your reply. Your #1) was in fact quite close to the mark. The turret itself was partly unscrewed and it was that thread which was screwing. That was why I found it difficult rotating the turret: the unscrewed turret thread preferred to turn instead. Now everything is fine. But I have a different sort of query which I am going to post. Peter >> >I wonder if any of you are familiar with this microscope, which I've >> >just [quoted text clipped - 16 lines] > available, or you risk trouble. > Good Luck!! Bob Marable. |
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