This traditional chart weight has a swing-out magnifying glass and is as useful today as it was in the days of the great maritime explorers. x2 magnification.
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.
Navigator's Magnifying Glass
Diameter 7 cm