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2. Rod (unit) - Wikipedia

   en.wikipedia.org/wiki/Rod_(unit)

   The rod is useful as a unit of length because integer multiples of it can form one acre of square measure (area). The 'perfect acre' [2] is a rectangular area of 43,560 square feet, bounded by sides 660 feet (a furlong) long and 66 feet (a chain) wide (220 yards by 22 yards) or, equivalently, 40 rods by 4 rods. An acre is therefore 160 square ...

3. Sucker rod - Wikipedia

   en.wikipedia.org/wiki/Sucker_rod

   The line of sucker rods is represented in this diagram by the solid black line in the center of the well. A sucker rod is a steel rod, typically between 7 and 9 metres (25 and 30 ft) in length, and threaded at both ends, used in the oil industry to join together the surface and downhole components of a reciprocating piston pump installed in an oil well.

4. Threaded rod - Wikipedia

   en.wikipedia.org/wiki/Threaded_rod

   Metric threaded rods are marked on the end with a color code to define the ISO strength class. The color codes are: [9] Unmarked — 4.6 class (tensile strength = 400 N/mm 2, yield strength 240 N/mm 2) Yellow — 8.8 class (800 N/mm 2, 640 N/mm 2) Green — A2 stainless steel (304) Red — A4 stainless steel (316) White — 10.9 class (1000 N ...

5. Fishing rod - Wikipedia

   en.wikipedia.org/wiki/Fishing_rod

   Perhaps the extreme in this philosophy was reached during the 1940s and early 1950s, when the now-defunct True Temper corporation – a maker of garden tools – marketed a line of trolling rods of 4.5-to-5-foot (1.4 to 1.5 m) length made of tempered steel which were square in cross section.

6. Tie rod - Wikipedia

   en.wikipedia.org/wiki/Tie_rod

   The working strength of a tie rod is the product of the allowable working stress and the rod's minimum cross-sectional area. If threads are cut into a cylindrical rod, that minimum area occurs at the root of the thread. Often rods are upset (made thicker at the ends) so that the tie rod does not become weaker when threads are cut into it.

7. Rod - Wikipedia

   en.wikipedia.org/wiki/Rod

   Cuisenaire rods, to teach children arithmetics; Rod-shaped bacterium, a shape of bacteria such as E. coli; Rod (optical phenomenon), a photographic artifact claimed by some to be alien life; Rod (unit), an Imperial unit of length, also known as the pole or perch; Rod cell, a cell found in the retina that is sensitive to light/dark (black/white)