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Radial Arm Saw. A radial arm saw is a cutting machine consisting of a circular saw mounted on a sliding horizontal arm. Invented by Raymond DeWalt in 1922, the radial arm saw was the primary tool used for cutting long pieces of stock to length until the introduction of the power miter saw in the 1970s.
In amateur radio, a boat anchor or boatanchor is an old piece of radio equipment. [2] It is usually used in reference to large, heavy radio equipment of earlier decades that used tubes. In this context boat anchors are often prized by their owners and their strengths (e.g. immunity to EMP) emphasised, even if newer equipment is more capable.
DeWalt Ford Fusion in 2008, driven by Matt Kenseth. DeWalt Tools sponsored NASCAR driver Matt Kenseth from 1999 through to the season of 2009. In this time period, Kenseth won 18 races, the 2000 Sprint Cup Rookie of the Year Award, 2003 Winston Cup Series Championship, 2004 NEXTEL Cup All Star Race and the 2009 Daytona 500.
The blades which enter the water are at the top of the picture and the handles are at the bottom. Note how the oar shaft connects not to the midline of the blade (as is the case of macons) but rather higher pitch, that is toward an upper part of the spoon/blade when perpendicular to the waterline. In rowing, oars are used
An example propulsor is shown in the accompanying picture. It has a shroud which cuts down on blade-tip cavitation and radiated noise. It also has a rotor element and a stator. The stator concentrates the thrust in axial direction and reduces energy wasted in the tangential flow (therefore eliminating torque on the hull).
In sweep oared racing the rigging means the forces are staggered alternately along the boat. The symmetrical forces in sculling make the boat more efficient and so the quadruple scull is faster than the coxless four. [2] A 'quad' is different from a 'four' in that a 'quad', or quadruple scull, is composed of four rowers each with two blades ...