What is the relevant size of a gnomon?

The relevant size of a gnomon, which is the part of a sundial that casts a shadow, typically depends on the design of the sundial and the specific latitude where it is located. A common height for a gnomon is about one-third the radius of the sundial's base. Its angle should be aligned with the Earth's latitude to accurately indicate time. Therefore, both the height and angle are crucial for ensuring precise shadow casting and time measurement.