The time is read off on the equatorial ring; the center bar is twisted until a sunray passes through a small hole and falls on the horizontal equatorial ring. The item "18th century traveller's sundial or universal equinoctal ring dial" is in sale since Monday, August 26, 2019. This item is in the category "Antiques\Science/Medicine\Scientific Instruments". The seller is "marl727" and is located in Blackpool. This item can be shipped to North, South, or Latin America, all countries in Europe, all countries in continental Asia, Australia, New Zealand, Egypt, Reunion, South africa.