The Projector, 2.5 inch—more commonly known as the Northover Projector—was an ad hoc anti-tank weapon used by the British Army and Home Guard during the Second World War.

76 Special Incendiary Grenades it used as one type of ammunition had a tendency to break inside the breech, damaging the weapon and injuring the crew.

With the end of the Battle of France and the evacuation of the British Expeditionary Force from the port of Dunkirk between 26 May and 4 June 1940, a German invasion of Great Britain seemed likely.

[4] Northover, an officer in the Home Guard, designed it to be an easily manufactured and cheap anti-tank weapon, costing just under £10 to produce, excluding the required tripod.

[5] The Northover Projector—which was officially labelled the "Projector, 2.5 inch" by the War Office[7]—was formed of a hollow metal tube,[8] resembling a drain pipe,[9] mounted on top of a cast-iron tripod.

[10] A simple breech was attached to one end of the tube, and rounds were fired from the Projector with a small quantity of black powder[10] ignited by a "top hat" copper cap as used in muzzle loading rifles ;[5] any recoil from the weapon was absorbed by the legs of the tripod, which were also hollow.

[11] Initial reactions to the Northover Projector were varied, with a number of Home Guard volunteers uncertain about the weapon's unusual design, and some officers never accepted that it could be useful.