BALL Watch Watch - Manual (Page 6)

T
elemeter Scale
The telemetric scale of the Engineer Master II Telemeter can easily measure the
distance between the observer and a situation that is both visually and audibly observable,
like lightning & thunder or artillery fire as in the World Wars, based on the speed of
sound through air (approximately 340 meters per second).
Description of Operation
The push- buttons P1 and P2 are screw-in type; they have to be unscrewed in order to
function. This better ensures water resistance when they are not in use.
Please refer to the automatic chronograph operating instructions to reset the chronograph
counter to zero position.
Start the chronograph by pressing push-button P1 on an optical signal (a flash of
lightning) and then stop the counter by pressing the same button when the audio signal
(thunder) is heard. The distance will be indicated on the telemetric scale in kilometers,
pointed by the position of the chronograph second hand.
R
otating Bezel
The Engineer Hydrocarbon series features a unidirectional rotating outer bezel
incorporated with LumiNova for night reading. The bezel is painted with 60 minutes
elapsed time notation. The 60 minutes bezel can be used for timing events by setting the
zero dot at the current minute.
The Engineer Master II Diver models feature another Ball breakthrough, the first inner
divers' bezel incorporated with 3H micro gas lights. After unscrewing the upper crown,
the inner bezel rotates bidirectionally to measure duration. To ensure optimal water
resistance, the crown must then be screwed down before diving.