How does a magnetic compass work? Well, it’s all down to basic physics and human ingenuity. The key component of a standard baseplate compass is its magnetized needle, which is allowed to spin freely ...

MR. GILLIE'S book contains within its small compass all the information necessary for those who wish to understand the factors on which the efficiency of the magnetic compass depends. Among its merits ...

A well-equipped boat needs three fundamental measurements: direction, water depth and speed. A compass is the basic recommended navigation equipment on any boat. You should purchase the best one you ...