Hamilton 9. 92. B Railroad Watch (1. The Hamilton 9. 92. B Railway Special is a high- quality railroad pocket watch. It has 2. 1 jewels, 1. The 9. 92. B is all about accuracy. The sample seen here has gained only 1. I set it to standard time on 0. November 2. 01. 3 to when I'm writing this three months later on 0. February 2. 01. 4. It's varied a little over the months, but has never been more than . At introduction in late 1. Ho Chi Minh fashioned the Democratic Republic of Vietnam in 1945 and wrote a declaration of independence that stated, 'All men are created equal; they are. Definition of a tolerance interval: A confidence interval covers a population parameter with a stated confidence, that is, a certain proportion of the time. Alternative definitions. The term perfect identifies the perfect fifth as belonging to the group of perfect intervals (including the unison, perfect fourth and octave. In December 1969, Greg Noll capped off a trail-blazing big wave career by riding “the biggest wave ever ridden.” Or did he? Records were broken and legends forged. Overview of Where Eagles Dare, 1969, directed by Brian G. Hutton, with Richard Burton, Clint Eastwood, Mary Ure, at Turner Classic Movies. The Hamilton 992B Railway Special is a high-quality railroad pocket watch. It has 21 jewels, 16 size, is factory adjusted to keep accurate time in all 6 positions and. THE REGISTRATION OF BIRTHS AND DEATHS ACT, 1969 (Act No. Phifertex Vinyl Mesh is a designer mesh fabric with excellent dimensional stability and flexibility in all climates. Woven from 100% vinyl-coated polyester, this mesh. Frederic Bartlett; Born October 20, 1886 Stow-on-the-Wold, England: Died: September 10, 1969 (aged 82) Cambridge, England: Nationality: British: Fields: psychology.The Hamilton 9. 92 and 9. B may be the most popular railroad watches ever made. The 9. 92. B is the movement. Hamilton sold the same movement with your choice of many different cases and many different hands and faces. The original 9. 92 (1. B seen here was usually sold as a complete cased watch. The 9. 92. B (1. 94. The earlier versions had flowery script, while the very recent version shown here has much plainer lettering. History. 18. 00s. As railroads became more popular, trains started crashing into one another as the tracks got too crowded. If one train was running early and another was running late, instead of passing each other in the opposite directions as intended, they might be on the same track at the same time running in opposite directions. Men realized that accurate timing was critical to keep trains in the right place at the right time. An inaccurate watch could put one train in the same place in the other direction as another train. Each railroad adopted different standards, but generally they required watches that kept time to within 3. Typically the men brought their watches to the watch inspector every other week to be checked, and set if necessary. The man would receive a . The watch inspector kept his reference time with a pendulum clock in his office. From about the 1. WWV. 1. 90. 0- 1. Hamilton 9. 40) Hamilton's first railroad watch was the model 9. They made about 2. Hamilton 9. 92) The original Hamilton 9. The 9. 92 is lever- set and has 2. Hamilton made over a million of these! Hamilton 9. 92. E) The 9. E is a 9. 92 with an Elinvar hairspring. Elinvar was invented by the same Frenchman in the late 1. Invar. Invar doesn't expand as heated and is used as a standard of length. Elinvar, a different alloy as used in the 9. E, doesn't change its springiness as heated. Keeping the same springiness lets the 9. E keep the same time regardless of temperature. Elinvar and Invar are so important to science that they won their inventor the 1. Nobel Prize. 1. 94. Hamilton 9. 92. B) The 9. B reviewed here is a completely new watch. Design and research was started in 1. June 1. 94. 0, and the first 9. Bs shipped to dealers on 0. November 1. 94. 0. It was made until no one wanted to buy them anymore in the late 1. Regular men's wristwatches became as accurate as pocket watches, so there was no more need to fiddle with a larger pocket watch. Hamilton made about 5. B. Specifications top. Intro Specs Performance Compared Usage Recommendations More. Construction. 21 friction- set ruby and sapphire jewels. All upper jewel settings are gold. The center wheel is round arm gold, and the third and fourth wheels are round arm gilt. The escape wheel is steel. It is white; the older regular Elinvar hairsprings were blue. Lever set. Accuracy. Static. Factory specifications permitted variations of no more than - 0, +5 seconds per 2. Positional. Additionally, the movements needed to vary by not more than these amounts when stored in these positions: Additional variationper 2. Dial Up Dial down 1. Cases, dials, hands and crystals. Collectors fart all over themselves trying to track all the cosmetic variations of both the movement and all the cases and dials and hands with which it could ship. I don't care about this minutiae, but here are some basics. Cases. There was but one 9. B movement at any time, but you could order it and today you can stick it in an almost unlimited number of cases. The case seen here is a Wadsworth bar- over- crown 1. That case design was introduced 1. March 1. 92. 6, and was called the . Dials. This particular dial is the number 5. There are names for each kind of lettering and a zillion variations in dial materials, numbers and what's shown on the dial. Note that this dial has every minute marked on the dial, making it easy to read 1. Quality. Made in Lancaster, Pennsylvania, USA. Size. 16 size movement: 1. The case of course will be larger. Weight. 3. 4. 10 oz. For a solid 1. 4K gold case, it sold for the equivalent of $2,7. Adjusted for inflation today in 2. B was $7. 80 in 1. For a solid 1. 4K gold case, it sold for the equivalent of $2,4. Today. The prices at e. Bay (see How to Win at e. Bay) will vary from about $1. B to about $1. 75 for most of those that sell every day, to about $5. Performance top. Intro Specs Performance Compared Usage Recommendations More. Accuracy. The watch seen here wasn't run for years. I started it up, and it ran exactly 1. I had it regulated, and it now runs to within . This is as accurate as quartz; I have quartz clocks and watches which are ten times less accurate than this, and others which are more accurate. One in great running condition ought to run to within a few seconds per day. Remember, the railroad specifications back in the 1. Get a good 9. 92. B tuned up and it ought to be much better. It's easy to set precisely, and the hands usually read very precisely. The hands lie close to the dial for little parallax error. Legibility. Legibility is excellent. The thin hands rarely cover the second hand. Power. The watch seen here, from a random stranger who never used it, ran for 5. You should wind it each day, but if you forget, no big deal. If you let it run down completely, mine takes 3. Sound. In a quiet room a few feet away, you will hear it ticking. Durability. It's a real watch. It is not shock resistent. It is not sealed against anything. Life Expectancy. This sample is about 5. I see no reason your watchmaker wouldn't be able to service this for another 5. Usage top. Intro Specs Performance Compared Usage Recommendations More. Winding. Turn the crown (the top knob) clockwise. It takes a while to wind all the way. Turn it until it suddenly gets firmer at its stop, and force it no further. Wind it every day at about the same time. Opening the front and back This sample has a case whose front and back unscrew to remove them. Hamilton points out on the warranty and care certificates that watch backs should never be opened unless absolutely necessary, because any dirt or dust will make the watch run less accurately. Don't take off the back to show your friends if you want your watch to run well; leave that to your watchmaker. Time setting: Lever Set In order to keep men on the trains from resetting watches accidentally, which could be fatal, . Lever set simply means that you have to unscrew the front crystal to uncover a small lever at about the 1 o'clock position. Flip out the lever, and now the hands will move as you turn the crown. Otherwise, the crown only winds the watch, and does not pull- out to set. You pull out the hidden lever, not the crown, to set a lever- set watch. Push the lever back in when done, and reattach the crystal. If you forget to push the lever back in, the crystal won't thread properly — your hint that you forgot. Learn if your watch tends to run fast or slow, and set the watch so that it will run towards perfect time. If you know your watch well, you'll be able to calculate the correct time in your head knowing the error that day. Whenever it becomes 3. In its day, no one needed to know time to closer than to a minute. The seconds hand was more of a feature to let you know the watch was running if it was too noisy to hear it ticking, and the seconds hand was used for timing short intervals precisely, like one minute or ten seconds. Regulation. This is done by your watchmaker. Never open the back yourself; you'll let in dirt and dust, and will probably leave marks or worse. One full turn of the precision regulation screw changes the rate of the 9. B by about 2. 0 seconds per day. Service. Back in the day, Hamilton suggested routine service at 1. Unlike wrist watches which only need service if they run erratically, pocket watches have such powerful motors that they'll still run fine if internally dirty, and grind themselves to death. Today with hot- rod synthetic oils, people seem to suggest about a 3- 5 year service interval. I'm still looking for a watchmaker to service mine when it needs it. Recommendations top. Intro Specs Performance Compared Usage Recommendations More. If you want a nice one, wait. About five of these a day sell at e. Bay, but to get a nicer one may take a couple weeks of looking. Look at the big screw heads on the movement: if you see any wear, mangling or . Most watchmakers make their own special screwdrivers that have thin blades, and are wide like these screw heads. The screw heads ought to look like this: Hamilton 9. B movement. The cases are not waterproof, and not even water resistant. There are still many places to have these serviced, and parts are plentiful. Get one, and it will outlast you unless you do something foolish or have an accident with it. More Information top. Intro Specs Performance Compared Usage Recommendations More. Official US Time (I use a shortwave radio for the WWV broadcasts at 5, 1. MC/s for more accuracy) Hamilton Museum How a Hamilton Watch Works (1. Railroad Watch history Lists of various approved railroad watches through history 9. B disassembly Hamilton catalogs and documentation. Regulating Hamilton watches Pocket watch jargon Help me help you top I support my growing family through this website, as crazy as it might seem. The biggest help is when you use any of these links when you get anything, regardless of the country in which you live. It costs you nothing, and is this site's, and thus my family's, biggest source of support. These places have the best prices and service, which is why I've used them since before this website existed. I recommend them all personally. If you find this.
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