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bent. The bearing is read towards the band scale when the sighted
object and the both lubber lines coincide. (See figure.)
COMPENSATION AND DEVIATION
Compensation is recommended, if the deviation is more than 5
degrees, when the compass is in its normal mounting position.
If the error is less than 5 degrees, it is sufficient to produce a
deviation table.
Compensation is made with the two compensation adjuster screws
"E/W* and "N/S" in order to reduce the errors caused by iron
objects
or
other
sources
of
magnetic
disturbance.
The
compensation adjuster screws are situated at the compass lower
front edge.
When compensating, the boat should be in an area that is not
affected by permanent- or electro-magnetic disturbance.
1. Aim the boat due North and turn the "N/S" screw until the
compass reading is 0°.
2. Aim the boat due East and turn the "E/W' screw until the
compass reading is 90°.
3. Aim the boat due South. If the compass does not show 180°, turn
the "N/S" screw until the error is halved. (E.g. if the error is 6° -
turn the screw until the error is 3°.)
4. Aim the boat due West. If the compass does not show 270°, turn
the screw until the error is halved.
5. Go through the procedure again and check the adjusted values.
6. Check the compass every 20 degrees and produce a deviation
table and deviation curve.
As the magnetic conditions in a boat are liable to change, we
recommend checking of the compass once a year and always after
installation of equipment which might affect the compass.
N.B. DO NOT REGARD THE COMPASS AS AN ACCURATE
NAVIGATIONAL INSTRUMENT UNTIL THE COMPENSA-
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TION IS CARRIED OUT AND THE DEVIATION TABLE IS
PRODUCED.
WHENEVER IN DOUBT, PLEASE SEEK THE ADVICE OF A
COMPASS ADJUSTER!
For illumination of the 70 UNE - Press in the middle of the red rubber
plug, to switch on the illumination. Turn off the illumination by
pressing plug once again.
Fitting batteries into the 70 UNE.
1. Remove the red rubber plug from the handle.
2. Pull out the illumination unit.
3. Fit the batteries according to the main drawing (+ down, - up).
4. Turn over the battery plate.
5. Press the illumination unit back through the guiding track in the
handle.
6. Replace the red rubber plug, first by hand, then push the plug
against a flat hard surface.
Data: Battery: Approx. 20 hours. Type of battery: Silver Oxide SR 44
1.5V (SILVA art.no 35632).
NOTE! Long term storage - take out the batteries.
NOTE! The illumination can be hard to see in strong sunlight.
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