Some years ago a retired headmaster showed me the compass from "an old fishing boat" that an old rascal, who had been a night watchman when the boat was laid up in Sunderland, had given to him. He told me that the name of the boat was Egton and these are two photos that I took of it. I don't know what became of the compass and all the notes I printed out about the Egton for him, the headmaster himself has gone now, he was a widower and his daughters, who live in other parts of the country, had absolutely no interest in the compass. I am reasonably sure that the compass was from Bartrams Egton. I hope it was more accurate in service than it was here, North is actually between W & SW., whatever that may be in compass terms
I have "The Mariner's Compass" by E.A. Suter, published in 1923 by Brown Sons and Ferguson, but I am much too dim to understand it, but could it be "south west by west"? The advert in the back cover says "Above all things --ACCURACY" ..... Ah well perhaps someday.