reversing drill

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• Tap and die — Not to be confused with Tool and die. Taps and dies are cutting tools used to create screw threads, which is called threading. A tap is used to cut the female portion of the mating pair (e.g., a nut). A die is used to cut the male portion of the… …   Wikipedia

• List of Tengen Toppa Gurren Lagann mecha — nihongo|Gunmen|ガンメン|Ganmen are the main type of mecha used in the anime series Tengen Toppa Gurren Lagann .The name itself means face/facade (顔面 ガンメン Face Surface), and can be broken down into gun and man mdash; unsurprisingly, the mecha… …   Wikipedia

• List of Gurren Lagann mecha — Gunmen (ガンメン, Ganmen?) are the main type of mecha used in the anime series Tengen Toppa Gurren Lagann. The name itself means face/facade (顔面 ガンメン Face Surface); unsurprisingly, the mecha themselves are centered around faces and as such are very… …   Wikipedia

• List of The Worst Witch episodes — This is a list of episodes from the television series The Worst Witch. Contents 1 Season 1 (1998 1999) 2 Season 2 (1999 2000) 3 Season 3 (2000 2001) 4 Reference …   Wikipedia

• Safety wire — Safety wiring of two pairs of drilled head bolts Safety wire or lockwire is common in the aircraft and racing industries as an extra precaution to keep vital fasteners from unintentionally loosening and parts from falling off due to vibration or… …   Wikipedia

• Deepwater Horizon oil spill — 2010 oil spill and BP oil spill redirect here. For other oil spills in 2010, see 2010 oil spill (disambiguation). For the 2006 oil spill involving BP, see Prudhoe Bay oil spill. For the drilling rig and explosion, see Deepwater Horizon… …   Wikipedia

• tunnels and underground excavations — ▪ engineering Introduction        Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …   Universalium

• Peak oil — A logistic distribution shaped production curve, as originally suggested by M. King Hubbert in 1956 …   Wikipedia

• Sarah Palin — Sarah Palin …   Wikipedia

• BOAC Flight 712 — Infobox Airliner accident name = BOAC Flight 712 caption = The burning aircraft date = 1968 04 09 type = Engine fire site = London Heathrow coords = origin = London Heathrow stopover = Zürich Kloten destination = Sydney passengers = 116 crew = 11 …   Wikipedia

• environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… …   Universalium