Printable rulers
4 Printable rulers , double scale value (degree-centimeter)
4 bands (width=4cm; length=25cm) on each of the 4 sheets of paper A4format
total length of the 4 rulers : 4m
For a 1m high gnomon
The shadow is cast on the paper ruler
You measure the length of the shadow
You directly read the value of the angle of the sun
You just need this ruler for a measurement on:
summer solstice (0° < latitude < 69°)
equinox (0° < latitude < 45°30’)
winter solstice (0° < latitude < 22°)
++++Ruler#2(100cm-200cm)
You need these 2 rulers (#1 & #2) for a measurement on:
summer solstice (69° < latitude < 87°)
equinox (45°30’ < latitude < 63°30’)
winter solstice (22° < latitude < 40°)
++++Ruler#3(200cm-300cm)
You need these 3 rulers (#1 & #2  ) for a measurement on:
summer solstice (toute latitude)
equinox (63°30’ < latitude < 71°30’)
winter solstice (40° < latitude < 48°)
++++Ruler#4(300cm-400cm)
You need these 4 rulers (#1 & #2 & #3 & #4 ) for a measurement on:
summer solstice (toute latitude)
equinox (71°30’ < latitude < 76°)
winter solstice (48° < latitude < 52°30’)
Home page | Contact | Site Map | Sign In | Statistics | visits: 3500