Improvements Today, the microscope designed by Spencer has not undergone many changes. The fine control of the condenser focus is superior to that of any microscope I have used, modern or antique. Also visit and query the which also is frequented by knowledgeable enthusiasts and, as a bonus, contains arguably the best photomicrography found anywhere in the world professional or amateur! The circular stage rotates and it has graduations in degrees and a vernier. This was not a microscope for the busy clinician or for the pathologist. Neeley -- copyright 2004 ®. It can be moved vertically, held in place, or be entirely removed from the optical path by means of a clamping device located on the right extension of the horseshoe base.
By 1900, Spencer had produced about 8000 stands; but serial numbers started to be applied by the Spencer company only at around the turn of the century, and it appears that the first serial number was 1001. This type of substage adjustment became a standard on Spencer microscopes as well as many others including Zeiss for many years. Qualities The microscopes built by Spencer are simple instruments designed to allow light to pass through objects allowing the user to see the structure and details of that object. In fact, many of the older microscopes, produced by this company, are still functional and being used somewhere in the world. Spencer was the first to patent this type of mechanism in the United states.
Many knowledgeable microscope enthusiasts frequent Yahoo's. The result of this is an in-depth, three-dimensional image of the object that you can usually light from above or below. I have since tried to add to it as documents or scans have been kindly sent to me, or I have been able to bid on them on eBay. The stage is thus always horizontal except when the instrument is used photomicrographically, when the entire instrument is placed in horizontal position resting upon three bosses provided on the two arms and base, thus leaving each part intact and in the vertical stage. Reichert still manufacture and sell microscopes under the Reichert, Leica, Volpi and Spencer Industrial Products names.
The 10x and the 20x objectives suffer from moderate field curvature. On the latter date two patents were listed. Spencer and Sons Company later changing the name to Spencer and Smith. What science-minded youngsters dreamt about in 1910 below. A good Yahoo Microscope Group thread on this topic can also be found.
In some cases, the dates are accurate to within the actual year of manufacture, while for others, the dates are only extrapolations or approximations based on the style of the microscope or other information. We provide a complete buying solution from point A to Z. Additionally, I am not aware of any surviving example of the late binocular body than the one illustrated in figure 7. In dating the instruments presented on this website, use was made of whatever information happened to be available. In either case, please take as many pictures of the damages as possible and make notes of the damages.
This microscope is in almost new condition. What Are You Looking for? American Optical Microscope repair can be a challenge but ebay may be a good starting point to find parts at reasonable prices, obviously verifying the condition of the part first and foremost as well as seller reputation. We'll answer questions, supply more details, or photos on items that you are interested in. Belthle and Belthle and Rexroth, C. We require freight shipping to reduce the chance of damages.
There is a patented adjustment for pressure of the outer fitting against the bearings of the coarse adjustment, which is adjusted by a silver-colored knob. The list of microscopes presented below is organized with respect to the country of origin and further with respect to the instrument maker. We have a very low return rate. In 1961 minor improvements to the objective lenses occurred. The MicroscopeMaster website is for educational purposes only. Both the rotation and the x and y movements can be clamped in order to keep the stage at a fix position.
Packing may include bubble wrap, packing paper, insta-foam packaging, or other forms of protection for securing the item. Looking for advice on cleaning your microscope's optics? It has holes for two stage clips, but these have been replaced with a later mechanical stage with separate X and Y controls. Viewing an excellent online video: by Bruce Russell will give you a good idea of what to expect from microscopy as a hobby. Scientific understanding changes over time. It was designed to be the ultimate research microscope, and in a way that is what it was, at least in the American scene. The 1974 version is also available right. Information on Polarizing, Petrographic, and Geological Microscopes of all brands See Greg McHone's wonderful site for manuals, catalogs, and guidance on many models and manufacturers.