The raised arm of a sundial that indicates the time of day by its shadow is the gnomon (NO-mon). A sundial has but one arm, what do you mean by secondary arm?
The secondary arm on a sundial is called the gnomon. It is the part of the sundial that casts a shadow to indicate the time of day.
gnomon
The stationary arm on a sundial is called the gnomon. It is the part that casts a shadow onto the sundial face to indicate the time based on the position of the Sun in the sky.
The stationery arm of a sundial is called the "gnomon." It is the part that casts a shadow onto the dial face to indicate the time.
gnomon
The raised arm of a sundial that indicates the time of day by its shadow is the gnomon (NO-mon). A sundial has but one arm, what do you mean by secondary arm?
The secondary arm on a sundial is called the gnomon. It is the part of the sundial that casts a shadow to indicate the time of day.
gnomon
The stationary arm on a sundial is called the gnomon. It is the part that casts a shadow onto the sundial face to indicate the time based on the position of the Sun in the sky.
The stationery arm of a sundial is called the "gnomon." It is the part that casts a shadow onto the dial face to indicate the time.
They had the sundial, pieces of rope, they usually used the kings arm-length and the length of his foot (thats where the name foot came from)
The pointer on a sundial is called a gnomon. It casts a shadow on the sundial face to indicate the time.
index?
pin clock
A gnomon is the upright piece of a sundial, and it is the part that casts its shadow down onto the dial to indicate local solar time.
To calibrate a sundial, adjust the gnomon (the upright piece that casts a shadow) to align with the North Star or true north using a compass. Ensure it is set at the correct angle based on your latitude. This will help the sundial accurately indicate the time.