The revolving nosepiece was patented in 1928, and it was for time-saving purposes that the invention was advertised. You can see below that the modern nosepiece is somewhat different from the original design, but the fundamentals are almost the same.

Because the nosepiece spins, it may be rotated to provide different magnification levels. Though the level of magnification varies with various models, most microscopes come with a low power lens with around 5x magnification and a high power lens with about 100x magnifying.

The microscope’s revolving nosepiece is used to interchange the objective lenses quickly and efficiently. Objective lenses come in various magnifications, with the nosepiece able to accommodate 3 to 5 objectives.

The image is then magnified even further as it travels up the microscope’s body tube to the eyepiece, increasing the viewer’s picture.

The revolving nosepiece is between the ocular lens (the eyepiece) and the stage (where the microscope holds slides and other objects for viewing). The revolving nosepiece attaches to the microscope’s arm at the bottom on almost all models. The revolving nosepiece is circular and has three or four cone-shaped lenses attached to it. The revolving nosepiece may have a serrated edge for easier gripping and rotation.

Oh yes, I have the pudgiest of fingers! String spacing at the saddle has never been a problem for me. It is the nut spacing that is crucial to the sausages (or bangers for you Brits) on the end of my hand being able to fret cleanly, especially since I rarely venture past the 4th or 5th fret.

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The revolving nosepiece is an essential component of a microscope’s operation. This part of the microscope has made it easier for users when switch between objectives. The nosepiece also helps to keep the lenses clean and free of dirt and debris. You may quickly change objective lens magnifications and maintain the specimen fixed while using the nosepiece. The lenses must be kept clean to prevent degradation of the image.

I have a new LJ6 and I absolutely love it. I like it better than my solid hog dreadnaught, better than my Seagull Mini Jumbo. It is so well balanced and the sustain since putting on a bone saddle is great. I have no experience with the 16 series so I can't compare to an LJ16. IMHO, if you are happy with the sound and playability of the 6 series, get that. You can always find a git that sounds better than the one you have. I guess that's what we call GAS!

As to the Martin, it is an extraordinary fingerstyle guitar. It's tone is unique due to the all mahogany construction. Looking for an occasional change of pace from that dark, woody tone.

Before using the microscope, make sure the lowest power objective is in place by listening for the audible click sound. The next step is to rotate the nosepiece to a higher-power objective after focusing on a low-powered one. Then once you find focus again, you will turn the nosepiece again to the higher power objective and repeat this process until you reach the desired magnification.

There have been several reports regarding the microscope nosepiece becoming loose and the rotating mechanism not rotating in a controlled manner. If you find that your microscope’s nosepiece is open, check the screws and try tightening it. If it’s too tight, you may loosen it a bit, or if it’s too loose, which is generally the case, you can tighten it.

The lenses on the revolving nosepiece may become dirty through regular usage, especially if oil or water is applied to the slide. The easiest method to clean the lenses is to use lens tissue and carefully wipe the surface. Users may also blow compressed air through the equipment. It is not recommended to blow on the lens or eyepiece to remove particles because this might cause moisture from their breath to condense on the nosepiece and lenses. Users using immersion oil should wipe the oil from the lens, nosepiece, and other microscope components with lens tissue after viewing a slide as quickly as possible.

The various components of a microscope work together: light from the illuminator passes through the aperture, the slide, and the objective lens, where the image of the specimen is magnified.

Yamaha LS 16M

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A standard optical microscope’s revolving nosepiece is a critical component. The optical microscope, used in schools and laboratories, is the most common type of microscope because of its low cost and ease of use compared to other microscopes. A user should understand the revolving nosepiece of an optical microscope to utilize the instrument properly.

Right now I'm vacillating between a smaller bodied FS720S or an FG700S for purely nostalgic reasons as it seems the closest in spec-except for the solid top-to my old FG180. Again I'd have to buy unseen...anyone know what I can expect from the 700s?

Regarding your question... only YOU can decide if the slight difference in sound is worth $250... I'm not good enough to warrant the delta, so went with the LS6 .

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Twist the objective lens to the left and check for threading to return the objective. It’s often simpler to twist the objective lens to the left to find it and then begin twisting the objective lens to the left.

It is the sound of the guitars that keeps me going, not my own input to the music that inspires me---if that makes any sense.

This approach is advantageous because it allows the user to detect items with a low-power lens and then look at them in greater detail with the high-power one. If the microscope didn’t include a revolving nosepiece, it would only provide one level of magnification.

I heard people raving over the tone and construction of the LS6 and was compelled to ask. Your response was not what I was expecting. Can't say I've heard of a lam back/side being picked over an identical or closely similar model of solid wood. Interesting. Does the 26 sound compressed in comparison to the "typical" all solid 000/OM, or does the 6 sound more "open" than it should?

I prefer the LS16 to the LS6, but think the LJ16 is a solid all round guitar for most styles and have one for that purpose.

I have improved by leaps and bounds from where I left off (started 30 years ago with long periods of inactivity) and play at least an hour or two a day on average. I have both anatomical and musical limits which will always be a roadblock, but playing has become my way of shedding the stress and pressures of my work, which seem to increase rather than decrease as I get older.

The nosepiece should be checked for proper function before each use. Additionally, if you need to remove or replace your microscope’s nosepiece, this can be quickly done by unscrewing the objective lens and then screwing it back in place.

The nosepiece microscope works the way a revolver gun works. The cylinder has the bullets lined up with the barrel and fired by the pin. A person using a microscope will initiate the same spinning of the nosepiece to lock it in place in preparation for viewing.

BTW, I think I bought that OM-15 that was linked last year (unless it's another OM-15 with a big back crack). The crack supposedly happened in transit to me and I ended up having to send it back and do a dispute to get my money back. Too bad, cause I would have had it repaired for a suitable partial refund. Nice sounding guitar.

Economic times being what they are, a $500 guitar is more attractive than a $750 guitar at the moment (and less likely to provoke my wife to kill me in my sleep). I am afraid I have bought my last Martin, Gibson or Larrivee for a long while.

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I have the body armor and helmet(2 motorcycles in the garage---oops, motorbikes ). However, a Kevlar jockstrap might help me sleep better!

The primary purpose of a microscope is to magnify an image. The first microscopes used a single lens, but compound microscopes used multiple lenses to create a more detailed image.

Clean it with compressed air, lens tissue, and water to clear out any dirt accumulated over time. A dirty objective can negatively impact the appearance of samples you are viewing.

Your perspective certainly makes sense to me and three factors stand above all others. Enjoyment, inspiration and stress relief, with all running equally alongside one another and serving you well. You can't place a price on such life enhancements.

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I have a nice collection. Beyond Yamaha. My favorite guitar is the all lam FG300. Man it drips tone in that 7th to 9th fret area.

There are many reasons why a person may want to remove their objective lenses from the nosepiece, although the most frequent is cleaning. Simply twist it to the left like a screw and unscrew it with your hand to take out an objective.

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The LS16 is not out of reach. I kind of have a deal with my wife anyway. I sell guitars that gather dust to pay for new acquisitions. 1 in the door and 2 or 3 out to eBay.

The only problem - and my wife keeps reminding me - is that we all have to sleep sometime and no amount of body armour can ever provide enough protection. I can't even hide, or sleep in the workshop, because she has a key. lol

I read my initial post and realize it sounds at least borderline stupid. Way too subjective. My assumption was that the all-solid version should be well worth the additional cost, and $750 is not too high for a decent solid guitar.

One problem with isolating your playing to a specific string spacing is that it can often limit the number of instruments you can play comfortably by virtue of a lack of familiarity.

I've no doubt you'll like the LS6 and LS16 -- everything you're describing (both your needs/use of guitars and your physical attributes) apply to me as well, and the LS6 suits me "just right" for fingerstyle play. I really do love it. If you can swing it, by all means get the 16 -- it can only sound like more of the same (i.e. better).

Overall, the nosepiece microscope is a valuable accessory for most microscopes today, providing high magnification levels and precise user adjustments. If you require a replacement or additional nosepiece, it’s easy to find them online.

I have small fingers 43/44mm is perfect. I had a 1 13/16 Collings. Great sounding but the neck was a baseball bat. I couldn't do chords at the 12th nor through the 7th fret on it. It went bye bye

I have both a 6 and a 26; both are lovely instruments and get equal amounts of playing time with, if I'm honest, the 6 just edging ahead.

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To me neither of the Yamaha's are a good choice for fingerstyle because the string spacing at the saddle is way too tight. I owned the LS6 briefly, but that spacing was a killer. YMMV of course since you don't have my pudgy fingers. Among similarly priced alternatives I'd recommend a Stanford OM.

I guess I am wondering if anyone has enough experience with both the all solid LS16 and laminated side/back LS6 to give me an idea if the resonance of the LS6 is sufficient to compete with it's all-solid sibling?

However, it's not very loud (and I suspect the 16 is the same here). I'm going to replace the saddle with bone soon, as others have reported an increase in volume (and sustain, which is nice too) when going to bone with this model. I'm sure it will be "just right" at that point.

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The microscope nosepiece, often called the revolving turret, is located below the microscope’s head and secures the objective lens over the stage aperture by rotating in either direction. The type of microscope determines how many objectives can be housed in the microscope nosepiece.

I am thinking about picking up a spruce/rosewood 000/OM as an alternative to my all hog 000-15S for fingerstyle. From all the buzz I have read over the L series, I am thinking Yamaha LS. I don't know if I will be able to find any locally to play and compare.

If you are going to buy mail order. Pittsburgh Guitars has competititve and better prices than the MF/GC guys and they look at the stuff they sell! I am going out there (30 miles) next week. IF ANYONE wants me to check out a specific guitar let me know.

The next step is to learn how to use and adjust your compound microscope. It’s also critical to understand and appreciate the proper techniques for cleaning your scope.

There are several types of microscopes, but we will look at the parts of the compound microscope in this article. You must understand that this tool is more complicated than those with one lens.

Yep, I have an angle. If Pgh Guitars does well with the Rosewood Program I bet I get to try a 36. They haven't ordered one yet....

Now I'm on a quest to get something for flatpicking/strumming (like out back by the firepit) -- more for bluegrass and singalongs. So I'm looking at dreads of course... need that boomy-punch sometimes, ya know?

Definitely true---I dove back into playing headfirst when I finally began to acquire some quality guitars a few years ago. Despite my limitations, I really enjoy the sometimes subtle differences between guitars, both in feel and in tone. I typically play 3-4 of mine every night.

Following a few minutes of study, the user can easily swap between nosepieces to adjust for different magnification levels and field-of-view sizes. This precision allows the objective lens to remain aligned and centered with the sample, eliminating the need to refocus a slide.

I did not try a 16 but man I love the 6! I pick up my LS6 next week. Great playability and tone. Pittsburgh Guitars has them cheaper than the box stores and they check them out.

Whilst the LS6 is an excellent guitar, the LS16 is superior in terms of resonance and tone. The only difference between the two is the use of solid instead of laminate b&s, but IMHO the LS16 is well worth the extra investment.

The revolving nosepiece rotates by grasping the objective along the etched grip section of the objective lens. Then it is turned clockwise or counterclockwise, depending on which purpose you’re attempting to lock into position. If the revolving nosepiece on your microscope has an etched grip, as with some larger microscopes, you should utilize it to turn the nosepiece.

The beauty is that champagne ears can help beer fingers improve with practise. As always I highly recommend trying before buying whenever possible.

Imagine going from classical 2"+ spacing and onto steel strung 1-3/4". The transition becomes a non-issue with practise and precisely the same can be said of the differential between string spacing at the saddle. All it takes is a little time, practise and familiarity.

I suspect I would agree with you. Despite my digital shortcomings, it seems my ear discerns slight tonal differences. I guess I have champagne ears and beer fingers.

The microscope is one of the most critical tools in the scientific world. It allows us to see things too small to be seen with the naked eye and opens up a whole new world of discovery. It started as a simple gadget invented around 1590. Though it is unclear whether it was Hans Lippershey or Hans and Zacharias Janssen who created it, the microscope has become crucial in scientific discoveries, which had profound effects on the development of society.