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As with their air-actuated cousins, powder-actuated guns have a muzzle safety interlock. If the muzzle is not pressed against a surface with sufficient force, the firing pin is blocked and cannot reach the load to fire it. This helps ensure that the gun does not discharge in an unsafe manner, causing the nail to become an unrestrained projectile.
Because of this, the Army started the Accelerated Precision Mortar Initiative (APMI) from an urgent operational needs statement in February 2009 [citation needed] to create a GPS-guided 120 mm mortar with accuracy of 5 m (16 ft) CEP at 7,000 m (4.3 mi); because APMI was an urgent request, it was accelerated by an Other Transaction Authority ...
Tuckpointing was a way of achieving a similar effect using cheap, unrubbed bricks; these were laid in a mortar of a matching colour (initially red, but later, blue-black bricks and mortar were occasionally used) and a fine fillet of white material, usually pipe clay or putty, pushed into the joints before the mortar set. [4]
German masons repointing a wall in 1948. Repointing is the process of renewing the pointing, which is the external part of mortar joints, in masonry construction. Over time, weathering and decay cause voids in the joints between masonry units, usually in bricks, allowing the undesirable entrance of water.
The pointing machine is used for making one-to-one copies of existing sculptures and to reproduce models made of plaster, modeling clay or modeling wax in materials like stone or wood. It is not possible to use a pointing machine to produce enlarged or reduced copies; the traditional instruments for this are a set of calipers or a three ...
The Iron Sting (Hebrew: עוקץ פלדה, Oketz Plada) is a 120 mm guided mortar munition developed by Elbit Systems of Israel, currently in use by the Israel Defense Forces (IDF). The Iron Sting is designed for use with the "Keshet" and "Hanit" mortars in service with the IDF's Infantry Corps.
There are life skills that people need to have as we get older. Here are 15 of them that should be mastered before turning 40.
The 2B9 Vasilek (2Б9 "Василёк" - Cornflower) also known as Vasilyek, [2] AM 289 Vasilyek [3] or AM 2B9 Vasilyek, [3] is an automatic 82 mm gun-mortar developed in the Soviet Union in 1967 and fielded with the Soviet Army in 1970.