The balance hole and cap jewels must also be in perfect condition. Most modern watches use synthetic sapphire jewels providing an extremely hard, highly polished bearing for the balance staff pivots to run in. A crack or chip in a hole jewel may produce a sharp cutting edge which can easily cut grooves into a pivot or worse eventually reduce the diameter of a pivot much like a cutting tool would do in a lathe. A damaged hole or cap jewel will exert a different amount of friction on a pivot in different positions resulting in amplitude variations.

Next check to see that the hairspring is true and flat. If it is out of flat (pic) it could be hitting the balance arm or the overcoil may be contacting the underside of the balance cock in one or more positions. It is sometimes difficult to see contact being made as it may occur for only an instant during each oscillation of the balance. This too will result in amplitude variations.

The hairspring must be in excellent condition. It must be true (completely concentric) with no kinks. Make certain the spring is between the regulator pins. If it has jumped out from between the pins the spring may be making contact with the outside of one of the pins when placed in one position and then move away from the pin when the position is changed. This will result in a rate increase during pin contact and a rate decrease when no contact is made. Also check the space between the regulator pins. If they are too far apart the hairspring may only hit one of the pins in one position and may make no contact with either pin when the position is changed. The spring should move back and forth between the slot making contact with both pins during a balance oscillation. If the spacing looks good but contact is made with one pin only then the spring may need a small adjustment. This can usually be done with a fine point tweezer by bending the spring in or out slightly just in front of the hairspring stud. The regulator pins must also be straight up and down. Pins that are not parallel with a hairspring my cause the hairspring to tilt up and down (wobble) during the oscillation. Again this may result in spring contact with the balance arm or underside of the balance cock.

A dirty, rusty or magnetized hairspring can also cause positional error. While the balance is oscillating the spring may stick together in one or more positions while breathing normally in others. Sticking hairsprings are very common so always check them under high magnification to determine their condition.

Every IWC replica – watch carries the same definition of reliability, perfect time keeping, extraordinary visual features and unmistakable masculine design.  The IWC replica – collection consists of three models.  The first two are the Big Pilot’s watch, one with a cream dial and brown strap and the other with a black dial and a black strap.  The third model is the Pilot’s watch.  Every one of the IWC replica – watches share the common features that makes them top of the range IWC replicas.  These features includes the watch case that comes with a IWC-watch with its own perfect finish, the Arabic numerals and rhombic hands shown at with the contrasting white, cream or black dials.  Although these watches look very simple it has given careful consideration to details.  This includes the leather straps that speak of comfort.

The manufacturers of IWC replica – watches wants every man who thinks he is worth it to join and enjoy the admiration of men and women who can appreciate style and class if they see it.  You will know that you are very much appreciated if you get an IWC replica from that very special person.  You will also know that your companion has excellent taste and that you share a passion for the finer things in life.  Your IWC replica will show that you have an adventurous spirit, good taste and that you are able to enjoy the best things life can bring you.