The Boreal Arrow 

Code BA10073119: F. Barker & Son

This a nice military prismatic compass made by F. Barker & Son in 1916. The compass has a brass case in excellent condition. It opens and closes well. Crystal glasses are in excellent condition. It has two rotating bezels for angles calculation and use of the prism. Marked on the back F. Barker & Son, Makers, London, 1916, BARKER'S PATENT, PAT: No: 29677, 1910 with military arrow /|\. The dial is mother of pearl to enhance visibility in extreme conditions. The compass is liquid filled is working perfectly and finding North easily. The compass comes with its leather case still in great condition for its age. Marked T. G. S. The compass measures 54mm in diameter.