Make your Own Dial Part I

1
Make your Own Dial Part I
D
1. Draw two perpendicular lines AB, and CD.
Where they intersect is O, the origin 2. Draw CB
from C, using your latitude as the angle
between CB and CD. 3. Draw a line from the
origin O, (where AB and CD cross)
perpendicular to CB. Call this line OP
O
B
A
B
P
LAT
C
2
Make your Own Dial Part II
3
Make your Own Dial Part III
D
7. Starting from O, mark every 15 degrees
around the edge of the circle 8. Draw lines from
N through these circle points until they meet
line AB. These are the hour hour points.
N
O
A
B
C
4
Make your Own Dial Part IV
5
Make your Own Dial Part V
12. Draw a triangle gnomon. The acute angle
is equal to the latitude. 13. The high side of
the triangle may be artistically curved to
a pleasing shape 14. The gnomon goes onto the
dial face on the C to 12 line, with the
gnomons acute point placed at C. The
dial C to 12 line is pointed north. Then
the hypotenuse of the gnomon will be
parallel to the earths axis of rotation.
GNOMON
LATITUDE
C
12