100 trucs pour...

Faites savoir vos exploits!!^^

Vous n'êtes pas identifié.

#1 13-07-2017 10:00:05

lilian
Membre
Date d'inscription: 09-04-2015
Messages: 1224

perform the exercise in befitting good manners.

Interesting Navigation Equipment Interesting Navigation Equipment May 27 Mark Fayne Jersey , 2013 | Author: Carey Bourdier | Posted in Education
While you can certainly navigate a boat or ship using modern sonar, depth finders and radar, there are many pieces of equipment that can help you sail the seas and yet require no electricity. While many of these navigational instruments were invented hundreds of years earlier, they are still used today, albeit production quality has improved and the designs are sometimes a bit more complicated.


The alidade is an interesting piece of navigational equipment. This instrument is used to locate distant objects. Once you have found the object, you use the line of site to perhaps measure the angle of the object from another specific point of reference. These instruments have been used for centuries to help create oceanic and land maps. Foresters and firefighters use alidades to pinpoint the location of a fire in a vast forest.


Another tool often used for navigation is the three-arm protractor. This device is often used to help plot the position of a ship on navigational charts, and thus it is often transparent to allow viewing of the map or chart beneath it. The central arm is fixed in place and the other two arms can rotate. This device was invented in the early 19th century and is still used today by navigators.


Different types of compasses also are found on ships. While there are many types of computerized or electronic forms of navigational equipment on board ships today, all ships still have high quality compasses. A high quality surveyor’s compass, for example, can be an essential tool to use if one’s electrical system ceases to function and the watercraft is stranded at sea.


The first sextant was created by astronomer John Bird in the 1750s, although designs for the device appear several decades early. The sextant is still used today Leon Draisaitl Jersey , although those created today have accuracy of 10 seconds of arc or better. One uses the sextant to measure the angles between two celestial objects, and this calculation can be used to find Greenwich Time. Knowing Greenwich Time allows a navigator to pinpoint the longitude of their ship. Typically, measurements are taken at night and the navigator uses the position of the moon in relation to a planet or a star.


Of course binoculars are another useful tool when one is at sea, but these days, there are extremely high-powered binoculars that you can mount onto the boat deck. A mounted binocular system typically includes the binocular, the pedestal that attaches to the deck and a carriage assembly so that you can move the binocular easily.


Carey Bourdier loves writing reviews on precision scientific instruments. For more information about navigation instruments like a surveyor compass, or to find other surveying instruments like compass tripod, please check out the WarrenKnight site today.

Yankees Concerned About Sabathias Workload Decreasing Velocity - RealGM Wiretap

The Yankees are concerned about the recent struggles of CC Sabathia as they continue to tread water in the American League playoff race.


"It could be innings over his career," Joe Girardi said. "I mean, he's logged a lot of innings over his career. The workload, that's the only thing I can point to."


His fastball averaged 92.1 mph in Saturday's start and his cutter and slider were not as sharp as normal.


Sabathia said it was not a concern for him Laurent Brossoit Jersey , noting that his velocity was better in his last start against the Rays on Sept. 3, when he averaged 93.3 mph.


"It has nothing to do with velocity, health or anything like that," he said. "It's just about me making pitches and going out and shutting a team down when we get the lead."

Lawsuit Seeking Safety Netting In MLB Ballparks - RealGM Wiretap

A federal lawsuit filed in San Francisco on Monday is trying to force MLB to install netting from foul pole to foul pole to protect spectators from flying bats and balls.


The lawsuit, filed on behalf of an A's fan and other season-ticket holders throughout the major leagues, does not ask for money. Instead, it wants commissioner Rob Manfred to extend the screens that typically cover only a few sections behind the plate all the way down the first- and third-base lines.

Professional Panel PC: A Rugged Professional Computer Commercial computers are generally developed as a single device which is generally referenced to because an commercial panel PC. A remarkably highly effective machine which is especially created to conduct capably each in the house and outside, this long lasting kind of hardware is employed in all kinds of applications throughout a range of sectors. These include the armed service, food processing, healthcare along with automation.

The business panel PC is actually an exceptional, rugged part of equipment that will can always be observed upon to present secure along with efficient efficiency in the hardest of enviromentally friendly situations. Depending upon the distinct needs of an offered application Jordan Eberle Jersey , this can be made to tolerate bodily issues like vibration, extreme warmth, airborne debris, water, condensation or anything else.

In order to stand up to this type of severe atmosphere, a rugged industrial panel PC remains safe and secure by simply a sound outer outer shell. Not simply does this box supply a defence in opposition to the conditions it really is to end up being applied in, that will in addition withstand the kind of chemicals employed in commercial cleaning liquids which might be regularly employed in order to preserve high requirements of hygiene; which is important in specific applications.

The housing just isn't the only rugged part of the technology. The inner elements utilized will also be particularly manufactured from the most tough of materials, to ensure the to. Cheap NFL Jerseys   Cheap Jerseys From China   Cheap Jerseys China   Cheap Jerseys

Hors ligne

Pied de page des forums

Créez Votre Propre Forum
Insérer vos Graphiques
Dictionnaires de Traduction
Hébergé par ForumCrea.com