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2. Municipal castings - Wikipedia

   en.wikipedia.org/wiki/Municipal_castings

   Drainage Grate Municipal Casting. Municipal castings refers to many products, including: access hatches; ballast screens; benches (iron or steel); bollards; cast bases; cast iron hinged hatches, square and rectangular; cast iron riser rings; catch basin inlet; cleanout/monument boxes; construction covers and frames; curb and corner guards; curb openings; detectable warning plates; downspout ...

3. Twistlock - Wikipedia

   en.wikipedia.org/wiki/Twistlock

   The female part of the connector is the 7×7× 4 + 1 ⁄ 2 in (180×180×110 mm) corner casting, which forms each of the eight corners, welded to the container itself, and has no moving parts, only an oval hole in the tops of the four upper corners, and in the bottom of the four lower corners. The hole is an oval 4.9 in (124.5 mm) on the long ...

4. Guard stone - Wikipedia

   en.wikipedia.org/wiki/Guard_stone

   Obsolete cannons were often used as wheel guards in the Netherlands, such as for the Catherine's gate in Dordrecht. A guard stone, jostle stone or chasse-roue (French lit. "wheel chaser"), is a projecting metal, concrete, or stone exterior architectural element located at the corner and/or foot of gates, portes-cochères, garage entries, and walls to prevent damage from vehicle tires and wheels.

5. How New Orleans' security measures failed to prevent a ... - AOL

   www.aol.com/news/vehicle-attacks-difficult...

   Options include permanent concrete blocks, metal bollards that can retract to let emergency vehicles through, temporary metal barricades, police vehicles, and trucks filled with sand.

6. List of medieval armour components - Wikipedia

   en.wikipedia.org/wiki/List_of_medieval_armour...

   Forearm guard. May be solid metal or splints of metal attached to a leather backing. Bracers made of leather were most commonly worn by archers to protect against snapping bowstrings. Developed in antiquity but named in the 14th century. 'Vambrace' may also sometimes refer to parts of armour that together cover the lower and upper arms. Gauntlet

7. British hardened field defences of World War II - Wikipedia

   en.wikipedia.org/wiki/British_hardened_field...

   From March 1941, some pillbox embrasures were fitted with a Turnbull mount: this was a metal frame that supported a medium machine gun. [ 7 ] [ 8 ] The degree of protection offered by a pillbox varied considerably: the thickness of the walls and roof generally varied from just 12 in to 3 ft 6 in (0.3 to 1.1m) or more although the commercially ...