WW2 British Army Rectangular Protractor HMSO

The WW2 British Army Rectangular Protractor HMSO is a navigational and mapping instrument used by British military personnel during the Second World War. Constructed from durable clear plastic or acrylic, this protractor features precise engraving of grid and angle markings, enabling accurate map reading, artillery plotting, and navigation tasks. Its rectangular shape allows for efficient alignment with both military grid maps and traditional compass bearings. Typically marked with “HMSO” (Her Majesty’s Stationery Office), these protractors were standard issue and supplied through official government channels. The design includes measurement scales in both degrees and mils, supporting various operational requirements within the British armed forces. The WW2 British Army Rectangular Protractor represents a key piece of field equipment integral to military cartography, artillery operations, and command planning throughout the war. This item provides historical insight into the practical tools employed by service members for strategic and tactical operations during the conflict.