Ball RR1401 Bedienungsanleitung Seite 56

Telemeter: It measures the distance between the observer and a situation
that is both visually and audibly observable.
The telemeter scale is based on
the speed of sound through air,
approximately 340 meters per
second. Originally, it has been used
to measure the distance to lightning
or the distance to artillery fire.
Description of operation
Please refer to the above instructions for "Automatic Chronograph" to reset
the chronograph counter to zero position.
The Engineer Master II Telemeter (CM1020), Fireman Storm Chaser
(CM2092), Fireman Storm Chaser DLC (CM2192) and Fireman Storm
Chaser Pro (CM3090) can measure time accumulated up to 30 minutes with
the minute counter beneath the 12 o'clock position. The push- buttons [P1]
and [P2] are screw-in type; they have to be unscrewed in order to function.
Start the chronograph by pressing push-button [P1] on the optical signal
(e.g. a flash of lightning) and then stop the counter when the audio signal
(e.g. thunder) is heard. The distance will be indicated on the telemetric scale
in kilometers, pointed by the position of the chronograph second hand.
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Compass: It displays the direction based on time and position of the sun.
Fig.1
The Engineer Hydrocarbon Spacemaster Orbital (DC2036) and Spacemaster
Orbital II (DC3036) can be used as a compass synched to the sun or to store
relative position with a separate compass.
First remove the watch from the wrist and turn it until the local hour hand
points at the sun. Find the point halfway between the hour hand and 12
o'clock. Turn the outer compass bezel to set South to that point, then all
other cardinal points are displayed on the compass bezel. Please note, in
the Southern hemisphere, the point between the sun and 12 o'clock will be
North instead of South. (see Figure 1).
Adjust the time backward one hour during Daylight Saving Time.
When using to determine relative position, first turn the watch in order for the
"N" marking on the inner bezel to face North, then turn the outer compass
bezel to the necessary offset (e.g. 10°) from the inner bezel. (See Figure 2)
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Fig.2