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  2. Harbor Freight Tools - Wikipedia

    en.wikipedia.org/wiki/Harbor_Freight_Tools

    Harbor Freight Tools, commonly referred to as Harbor Freight, is an American privately held tool and equipment retailer, headquartered in Calabasas, California. It operates a chain of retail stores, as well as an e-commerce business. The company employs over 28,000 people in the United States, [5] and has over 1,500 locations in 48 states. [6] [7]

  3. Roll cage - Wikipedia

    en.wikipedia.org/wiki/Roll_cage

    Roll cages help to stiffen the chassis, which is desirable in racing applications. Racing cages are typically either bolt-in or welded-in, with the former being more straightforward and cheaper to fit while the latter is stronger and more substantial. [2] A roll bar is a single bar behind the driver that provides moderate rollover protection.

  4. Rollover protection structure - Wikipedia

    en.wikipedia.org/wiki/Rollover_protection_structure

    Some tractor operators have raised concerns about using ROPS in low-clearance environments, such as in orchards and buildings. In response, NIOSH developed an Automatically Deploying Rollover Protective Structure (AutoROPS) which stays in a lowered position until a rollover condition is determined, at which time it deploys to a fully extended and locked position.

  5. Flashing (weatherproofing) - Wikipedia

    en.wikipedia.org/wiki/Flashing_(weatherproofing)

    In earlier days, birch bark was occasionally used as a flashing material. [7] Most flashing materials today are metal, plastic, rubber, or impregnated paper. [8]Metal flashing materials include lead, aluminium, copper, [1] stainless steel, zinc alloy, other architectural metals or a metal with a coating such as galvanized steel, lead-coated copper, anodized aluminium, terne-coated copper ...

  6. Loading gauge - Wikipedia

    en.wikipedia.org/wiki/Loading_gauge

    The definitions assume a common "lower sector structure gauge" with a common freight platform at 1,100 mm (43.31 in) above rail. [16] In addition, gauge C1 provides a specification for standard coach stock, gauge C3 for longer Mark 3 coaching stock, gauge C4 for Pendolino stock [17] and gauge UK1 for high-speed rail. There is also a gauge for ...

  7. End-of-train device - Wikipedia

    en.wikipedia.org/wiki/End-of-train_device

    An ETD on a container train in 2005. The end of train device (ETD), sometimes referred to as an EOT, flashing rear-end device (FRED) or sense and braking unit (SBU) is an electronic device mounted on the end of freight trains in replacement of a caboose.

  8. Busbar - Wikipedia

    en.wikipedia.org/wiki/Busbar

    Copper busbar in a panel 1500 ampere copper busbars within a power distribution rack for a large building In electric power distribution , a busbar (also bus bar ) is a metallic strip or bar, typically housed inside switchgear , panel boards , and busway enclosures for local high current power distribution.

  9. 20-gauge shotgun - Wikipedia

    en.wikipedia.org/wiki/20-gauge_shotgun

    The 20-gauge shotgun, also known as 20 bore, is a type of smoothbore shotgun. 20-gauge shotguns have a bore diameter of .615 in (15.6 mm), while the 12-gauge has a bore diameter of .729 in (18.5 mm). [ 2 ] 12-gauge and 20-gauge shotguns are the most popular gauges in the United States .