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The pit sword (also known as a rodmeter) is a blade of metal or plastic that extends into the water beneath the hull of a ship. [1] It is part of the pitometer log , a device for measuring the ship's speed through the water.
Figure 2: Illustration of a Mercury Manometer-Based Pitometer Log. The basic technology of the pitometer log is similar to that of the pitot tube on an aircraft. Typically, the pitometer has a long tube that penetrates the ship's hull near the keel. The part of the pitometer protruding from the ship is sometimes called a pit sword or rodmeter ...
Each quoit weighs 4 lb (1.8 kg) and is approximately 6 + 1 ⁄ 2 in (17 cm) in diameter, has a 3-inch-diameter (8 cm) hole, and stands 1 in (2.5 cm) high. Since 2003 the USQA has conducted annual tournaments culminating in a World Championship in both singles and doubles as well as a season ending points champion.
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The rod, perch, or pole (sometimes also lug) is a surveyor's tool [1] and unit of length of various historical definitions. In British imperial and US customary units, it is defined as 16 + 1 ⁄ 2 feet, equal to exactly 1 ⁄ 320 of a mile, or 5 + 1 ⁄ 2 yards (a quarter of a surveyor's chain), and is exactly 5.0292 meters.
Bars are typically 5 to 6 ft (1.5 to 1.8 m) long and weigh 15 to 23 lb (6.8 to 10.4 kg). They are usually made entirely of cylindrical or hexagonal forged steel with a diameter of approximately 1 in (2.5 cm). Chisel and wedge ends typically have a blade width measuring 1 to 3 in (3 to 8 cm).
A rubber band ball is a sphere of rubber bands made by using a knotted single band as a starting point and then wrapping rubber bands around the center until the desired size is achieved. The ball is usually made from 100% rubber bands, but some instructions call for using a marble , [ 16 ] a crumpled piece of paper , or a ping-pong ball [ 17 ...
A measuring rod is a tool used to physically measure lengths and survey areas of various sizes. Most measuring rods are round or square sectioned; however, they can also be flat boards. Some have markings at regular intervals. It is likely that the measuring rod was used before the line, chain or steel tapes used in modern measurement. [1]
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