The Compass Book Author:Mike Harris, Diane Harris The magnetic compass is one of the most ancient of navigation instruments, yet even in these times of all electronic navigation, it remains a vital piece of gear for any boat. Needing no electrical power, it works just as well under the water as above. In the harshest, roughest conditions it's robust integrity makes it one instrument likely to... more » remain functional when all else is lost. The Compass Book is an introduction to the priciples of compass work. It is a guide for those wanting to carry out as much of their own repair and maintanence work as possible. It does not seek to eliminate the need for the professional adjuster but rather to explain the circumstances where the benefit of his training and experience would be of greatest advantage. This book is intended for owners of all types of small vessels, both power and sail. It should be of special interest to those traveling to remote parts where self-reliance is a key to safety and survival.« less