Francis Barker M-71 Prismatic Compass (1971) Chronometer with some marks and minor

with some marks and minor signs of wear

The Spectator later described the book as 'written in a highly charged

was a WW1 Royal Navy gunnery officer

There is some rippling to the endpapers

Francis Barker M-71 Prismatic Compass (1971) Chronometer with some marks and minorAn extremely rare Francis Barker M 71, complete with its original fitted leather case. The Francis Barker M 71 Prismatic Military compass was a direct descendant of the legendary Barker Mk III that was introduced in 1932 and used by British armed forces throughout the second world war. The M 71 was only made during 1971, in very limited quantities, before being replaced by the M 72 in 1972. The M 72 was itself quickly replaced by the M 73, which