I have NO ideal what kind of watch it is so I am giving general chronograph instructions. You will have to use as it applies to the watch you were given.
These instructions are provided for users who are not familiar with using a mechanical/analog chronograph. The instructions may be applied to any chronograph that has a seconds counter, 30 minute counter, and hour counter.
Please refer to the instructions of the appropriate model to determine the location of each counter on the dial. Note: some of the features described here may not be available on your particular model. Again, refer to the specifications to see if they apply to your model.
Using the chronographe functions:
How to read the chronographe:
For a chronographe that has a center seconds register, a 30 minute register and an hour register. Example 1: If the hour register is between the 1 and 2, but closer to the 1, and the minute register is at 20, and the seconds register is at 35, then the elapsed time is 1 hour 20 minutes and 35 seconds. Example 2: If the hour register is between the 1 and 2, but closer to the 2, and the minute register is at 20, and the seconds register is at 35, then the elapsed time is 1 hour 50 minutes and 35 seconds.
How to read the tachymetre:
If you are driving and want to determine the speed of the car using your tachymetre, start your chronograph when you pass a mile marker, stop your chronographe when you pass the next mile marker. Look at the center seconds hand and read the number on the Tachymetre scale, this number will indicate the miles per hour that the vehicle is travelling.
How to read the pulsometer:
Some watches have a pulsometer instead of a tachymetre. Use it as follows: Start the chronographe and begin counting the pulse. When you have counted 30 beats, stop the chronographe. The number on the pulsometer scale will indicate the pulse rate per minute.
How to read the telemeter:
Some watches have a telemeter instead of a tachymetre or pulsometer. Here is an example of one use for a telemeter: Start the chronographe when you see lighting. Stop the chronographe when you hear the thunder. Read the center seconds hand on the Telemetric scale and the number will indicate the distance separating the observer from the place where the lighting struck. This can give you a good indication of how far off a storm might be.
The many uses of a chronographe:
A chronograph has many practical uses, from timing a plane flight, a car ride, or simply being curious. There are also some uses for the chronographe that may not be so obvious. For example, you can use the chronographe on your watch as a dual timezone indicator. This is done as follows: If it is currently 6 A.M. in your home location and it is 12 noon in London, start your chronograph at exactly 6 o'clock. The number of hours displayed on your chronographe hour register will then show you the current time in London. Of course, these are just some uses of a chronographe. There are hundreds of uses for chronographes.
Power Reserve Chronometer
World Time Chronometer
Common Q & A's