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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.
Connecting rod, main, coupling, or side rod, in a reciprocating engine; Control rod, used to control the rate of fission in a nuclear reactor; Divining rod, two rods believed by some to find water in a practice known as dowsing; Fishing rod, a tool used to catch fish, like a long pole with a hook on the end
A connecting rod, also called a 'con rod', [1] [2] [3] is the part of a piston engine which connects the piston to the crankshaft. Together with the crank, the connecting rod converts the reciprocating motion of the piston into the rotation of the crankshaft. [4] The connecting rod is required to transmit the compressive and tensile forces from ...
A threaded rod, also known as a stud, is a relatively long rod that is threaded on both ends; the thread may extend along the complete length of the rod. [1] They are designed to be used in tension. [2] Threaded rod in bar stock form is often called all-thread (ATR); other names include fully-threaded rod, redi-rod, continuously-threaded rod ...
Rod twist is minimized by orienting the rod guides along the side of the rod with the most 'give'. This is done by flexing the rod and feeling for the point of most give or by using computerized rod testing. [18] Custom rod building is an active hobby among fly fishermen. See Fly rod building.
A lightning rod or lightning conductor (British English) is a metal rod mounted on a structure and intended to protect the structure from a lightning strike. If lightning hits the structure, it is most likely to strike the rod and be conducted to ground through a wire, rather than passing through the structure, where it could start a fire or ...
An ROD issued by the Federal Highway Administration (FHWA) signals formal federal approval of an environmental impact statement (EIS) or environmental assessment (EA) concerning a proposed highway project. The ROD authorizes the respective state transportation agency to proceed with design, land acquisition, and construction based on the ...
The emergency medical services' Star of Life features a rod of Asclepius In Greek mythology, the Rod of Asclepius (⚕; / æ s ˈ k l iː p i ə s /, Ancient Greek: Ῥάβδος τοῦ Ἀσκληπιοῦ, Rhábdos toû Asklēpioû, sometimes also spelled Asklepios), also known as the Staff of Aesculapius and as the asklepian, [1] is a serpent-entwined rod wielded by the Greek god Asclepius ...