FRANCIS BARKER M 73 Engineering Compass

The M-73 Liquid Prismatic Compass is a robust, precision instrument of predominantly brass construction, designed to withstand the most arduous climatic conditions. Quick, precise settlement of the liquid filled dial assembly allows rapid use of the compass in field conditions. Five self-luminous tritium light sources enable full night and daylight operation and every component of the M-73 can be replaced leading to years of continuous, reliable use. The black M-73 is supplied in a grey hand made satin-lined presentation box complete with leather pouch and full instructions. Features * Degrees version * Fully functional * Supplied with full instructions * Full day/ night use - 5 tritium lights * Military Issue * Complete with Case Specificatios: Size: 85 x 60 x 34mm. Weight: 210g. Operating Temperature: -30° C to + 55° C. Pivot: Sapphire Jewel. Liquid: Purified Kerosene. Graduation: Degrees ( 360 Divisions) . Night Illumination: 5 Tritium Light Source. Accuracy: One half of one degree ( 10 mils) . Case: Leatherette.