The gnomon is set for latitudes around 50 degrees North, so will be most accurate in the south of England, northern Europe, Canada and so on. At these latitudes this is a functioning time indicator. Brass – an alloy of copper and zinc – is easy to work with, can be polished to a gleaming shine, and it has a high degree of corrosion resistance, making it the traditional choice of metal for use in harsh marine environments. Comes with a velvet carry pouch for protection. Order now and get free delivery