LAT = 48.44728
LON =  1.48749
H0 = -4
GNOMONIC_DECLINATION = 0# west > 0, est < 0
STYLUS_ANGLE = 90# 0: horizontal sundial, 90: vertical
STRAIGHT_STYLUS_LENGTH = 3.5# cm
WIDTH = 29.7
HEIGHT = 21.0
#STRAIGHT_STYLUS_LENGTH = 6.5# cm
#WIDTH := 61.0
#HEIGHT := 29.7