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- Q3533924 subject Q8206009.
- Q3533924 subject Q8630099.
- Q3533924 abstract "The Tett turret is a type of hardened field fortification built in Britain during the invasion crisis of 1940–1941. It was a small circular pillbox named after its inventor H.L. Tett and manufactured as a private commercial venture by Burbridge Builders Ltd of Surrey. It comprised a revolving concrete turret mounted on a ball race that allowed it to be turned easily. The turret was set above a pit; in early designs, the pit was formed by a standard section of concrete pipe 4 feet (1.2 m) in diameter.The turret was a 20-inch (50 cm) high truncated cone of reinforced concrete weighing 1,456 pounds (660 kg) with a single embrasure and several spy holes.The design had a number of advantages. Compared with a conventional pillbox, it used relatively little concrete and steel, it was easy to conceal and being largely prefabricated it could be quickly installed. Because the turrets could be rotated, a group of soldiers in turrets could all bring their weapons to bear on an enemy whereas the same soldiers in a conventional pillbox might only be able to fire from one or two embrasures. In addition, it was relatively cheap at just £18 for the turret assembly [equivalent to £880 in Template:CURRENTISOYEAR].However, the War Office judged the Tett turret to be too cramped and not bulletproof against heavy fire, its isolated nature did not allow adequate command and control and the open top was vulnerable to a well-thrown grenade. The most striking feature was that the only way in and out was through the top – there was no way to escape without being exposed to enemy fire – it was to be a fight to the death. Burbridge went back to the drawing board and came up with a new version that instead of being positioned over a pipe was placed on a concrete slab over an underground chamber of brick or concrete slabs. This allowed access from a tunnel or slit trench to the rear. The company's brochure shows a wooden seat suspended from the turret by a metal frame.Burbridge also proposed that the turret be mounted on improvised armoured vehicles such as the Armadillo and the Bison concrete armoured lorry.Despite initial enthusiasm by those who saw the design, Burbridge had difficulty getting orders for substantial numbers and consequently, amid wartime shortages and restrictions, could not get even the modest amounts of steel and concrete required to manufacture many turrets. In November 1940, they received an order for just four turrets and even these could not be delivered until February 1941. Eventually, the company manufactured 100 turrets, but only sold 31 of them. Only six sites are recorded in the Defence of Britain database.Today, extant examples are very rare. Two Tett turrets can easily been seen at RAF Hornchurch which is now Hornchurch Country Park. These known Tett turrets were examined closely for the BBC series Two Men in a Trench. During filming, three previously unrecognised turrets were discovered in the undergrowth.Two very well preserved examples have recently been rediscovered in a small village in North Norfolk. A very rare if not unique layout links the two turrets with a concrete tunnel about 15 feet long incorporating a spur tunnel that exits the main tunnel at 90 degrees about halfway along its length. Both turrets sit on concrete slabs placed on top of brick walls dug into the ground. The steel seat hangers and wooden seats have also survived.The turrets differ from the Hornchurch examples in that the gun port is not U shaped but rather the top of the turret is a complete ring of concrete.These are in a remarkable state of preservation and are currently being investigated by a number of bodies. They may be worthy of listing as unique examples of anti-invasion defensive structures.".
- Q3533924 thumbnail Tett_Turret_Close_up_-_geograph.org.uk_-_168509.jpg?width=300.
- Q3533924 type Q91122.
- Q3533924 wikiPageExternalLink www.nationalarchives.gov.uk.
- Q3533924 wikiPageWikiLink Q1335987.
- Q3533924 wikiPageWikiLink Q16161577.
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- Q3533924 wikiPageWikiLink Q23276.
- Q3533924 wikiPageWikiLink Q2935163.
- Q3533924 wikiPageWikiLink Q3356038.
- Q3533924 wikiPageWikiLink Q362.
- Q3533924 wikiPageWikiLink Q41551.
- Q3533924 wikiPageWikiLink Q5904179.
- Q3533924 wikiPageWikiLink Q7275393.
- Q3533924 wikiPageWikiLink Q81641.
- Q3533924 wikiPageWikiLink Q8206009.
- Q3533924 wikiPageWikiLink Q8630099.
- Q3533924 wikiPageWikiLink Q91122.
- Q3533924 wikiPageWikiLink Q9531.
- Q3533924 name "Tett Turret".
- Q3533924 type "Pillbox".
- Q3533924 type Place.
- Q3533924 type ArchitecturalStructure.
- Q3533924 type Location.
- Q3533924 type MilitaryStructure.
- Q3533924 type Place.
- Q3533924 type Thing.
- Q3533924 comment "The Tett turret is a type of hardened field fortification built in Britain during the invasion crisis of 1940–1941. It was a small circular pillbox named after its inventor H.L. Tett and manufactured as a private commercial venture by Burbridge Builders Ltd of Surrey. It comprised a revolving concrete turret mounted on a ball race that allowed it to be turned easily.".
- Q3533924 label "Tett turret".
- Q3533924 depiction Tett_Turret_Close_up_-_geograph.org.uk_-_168509.jpg.
- Q3533924 name "Tett Turret".