1
506
marked in the sketch-plan attached, as follows:
(i) Clock room.
he
(1) Superintendent's Office (111) Computing room and office (ir) Meteorological rooms.
magnetre
Meantime Errors
Clocks. The
mean
hine
the mean time)
The clock room will contains the Clock and Electric Apparatus which is to discharge the time ball automatically, also
netic Apparatus for the correction of
and two reserve Chrono meter to be used in case of accidents to
9 masoury pier Clock will have a solid foundation and be brought up from a pit-bottom five feet below ground. In this room
alongside the mean time clock, will be placed a sympathetic, dial Shewing Sidereal time and connected by wire with the Sidereal Clock in the transit poom. Next to the clock room follows the Superintendent, private office and library, and divided,
divided from this again by the Entrance hall and Staircase is the general office and computing room. The fourth and last room, adjoining the Com = puting room, is the meteorological chamber to contain the barograph, thermograph, and Eventually the Electrograph.
Over the upper story a turret rises some;
" a pect above the roof to contains the aneme
the anemograph, the registering apparatus of which will also be fixed inime diately below the tunet, so
as to avoid the torsion liable to occur with a
long Spindle carried down to the Ground floor:
roof of the building will be made Easily
The
accessible from the turret, and if necessary
may
be used ad a
platform for observations. At a convenient place on the roof or parapet a small stone block will be fixed to hold the Sun =
· Shine recorder. The the be
building may lawn in the Centre
be placed. The block
be
open level ground in
in front of
turfed and made into a which the rain-guage 7.
will
of outbuildings containing servants Suaiters and outoffices needs no description.
as it is only the ordinary adjunct such as would be built with a small private European dwelling house in Hong Kong.
The transit room is on
A
the ground floor and abuts against the East sud of the house. It ad. joins the Clock room and is connected with the Lame by a large door, it is also accessible from the verandah by a
a second door. The transit room is a brick structure 14 feet square. The roof will be of wood covered with felt. The + méridian will be open to Continuous new by windows two feet wide Extending up to the roof, and by
slit or opening along the Ceiling also two feet wide. The opening in the Ceiling
be covered in by a shutter working hinges controlled by ropes and pulleys, this -method being more secure against typhoons than a sliding shutter. The foundations for the Stone piens of the transit instrument will be solidly based on portland cement Concrete and the piers themselves will be built up from a fit at least six feet deep. The same precaution against
vibration will be observed in the pier
6
may
on
No comments yet.
Private notes are available after approval.