Hi there and thanks for the kind words on my book. I think Ray Mears said that writing his first book was like giving birth and I now fully appreciate that statement!
malcolmc: well spotted with regards to the incorrect degree markings on the compass bezel, this was indeed an illustrator error and has been picked up for the second-print.
With regards to the representational triangle formed when plotting 3 back-bearings, the original text I wrote did explain the possibility of a positive or negative error, depending on factors such as: accuracy of the bearings being taken and transferred to the map, individual compass error (ICE), the scale of the map and even the thickness of the pencil mark being used to mark the line on the map (again depending on map scale). Unfortunately, as I came to learn, despite one's best efforts to explain everything in detail there is a constant battle in fitting all of your words into a certain space, in this instance there just was not enough room to include all of the text. In reality, if you have taken 3 bearings from 'seen' features you are probably going to be able to work out where you are in relation to the 'triangle' but I take your comments and will flag this up to amend the wording on the second re-print (subject to winning a fight with the editors
). Many thanks for your comments anyways.
Just to let you know that the example pages of the book shown at the first post (above) and one of the linked pages are actually 'knock-up pages' that were used when designing the book and not the actual pages of the finished book.
Once again, thanks for your comments and just to let you know that I don't receive any royalties from the sales of the book, they go to the Royal Navy & Royal Marines Association to help our servicemen and women.
All the best
Colin