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How to align the clock case
For optimal readability we suggest to place the 10 mm drilling for the wall plug approximately
in eye height (ca. 180 cm). This position is equivalent to the centre of the dial.
Insert the wall plug. Screw in the hanger bolt with the cap nut until the bolt protrudes 4 cm
from the wall. Take off the cap nut again.
Now hang the empty case with the central drilling over the bolt. Then put on the washers and
the cap nut to screw the hanger bolt deeper into the wall until the case is pressed gently to
the wall. Put the case in vertical position by using a water level. Now screw in the four case
screws located in the corners of the clock case until the tips get stuck in the wall.
How to hang in the pendulum
Caution!
Do always hold or carry the pendulum at the free pendulum rod, never at the
adjusting-table or the plate of the barometer-instrument.
Since the movement is already removed, the nickel plated protection tube can be pulled off
from the suspension spring block (located between the two upper movement holding pillars).
Remove the suspension spring and keep in reach. Now unscrew the protection cap from
the tip of the pendulum. To avoid damage of the delicate suspension spring we recommend to
insert it into the slot of the pendulum rod first, hold it in place and then hang the pendulum
together with the suspension spring into the suspension spring block.
Push back the protection tube on the suspension spring block. Because of the lateral mounted
air pressure compensation, the pendulum is pushed slightly from the centre position to the
side. By turning the nuts at the sides of the pendulum scale you can adjust the pendulum scale
in a position that the tip of the pendulum points exactly to »0«.
How to fit in the movement
Remove the safety rubber band from the pallet. Push the movement on the 4 pillars and screw
it down with the four knurled nuts. Remove the transport protection of the escapement lever.
So that motion can be transmitted from the movement to the pendulum, the driving pin of the
pallet lever must be inserted in the triangular cut-out in the safety flap on the beat adjuster.
To do so, reach behind the movement from the side, carefully press the lever with the cut-out
backwards and upwards until the driving pin slots into the triangular cut-out.
How to set the barometer hand
The scale of the barometer does not correspond to the display of changes of pressure measured
in hectopascal, as is nowadays the case with barometers. The scale does rather display the
changes of pressure, as it was formerly done, in millimetre mercury column. When the pressure
at the destination of the clock is »normal« adjust the display by setting the hand of the
barometer to zero by turning the knurled-head screw above the aneroid boxes.
You can now read the reactions of the barometer to changes of pressure as follows: High
pressure is displayed in the upper half of the scale, in the »positive« range, low pressure is
displayed in the lower half of the scale, in the »negative« range. If the pressure increases the
period of oscillation of the pendulum lengthens, thus the clock is slow. By the compression of
the aneroid boxes however, the weight located on them sinks towards the centre of the
pendulum, resulting in the acceleration of the pendulum. The change in speed caused by
the change of pressure is thus compensated.