"...a unique book with lots of very useful information and instructions about using a sextant, much of which translates very well to the understanding and use of metal sextants also. ...highly recommend it. It has excellent information on the how and why of index correction, as well as a terrific review on Sextant piloting." Scott, NavList 1/14/2011

"...a very fine book with lots of information that's valuable to both beginning and experienced navigators and navigation enthusiasts. BUY IT. Practically anything you can do with a sextant (apart from opening bottles of beer...) is covered in this book. It's really good. The section on sextant piloting is more detailed than any other treatment that I have seen. " FER, NavList 1/14/2011