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2. Rod (unit) - Wikipedia

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

   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.

3. Taper pin - Wikipedia

   en.wikipedia.org/wiki/Taper_pin

   A 1:50 taper means that one end of a 50 mm long bar will be 1 mm smaller in diameter than the other end. Inch-sized taper pins have a slightly smaller taper taper on diameter of 1:48 [ 2 ] A 1:48 taper means that one end of a 4-foot-long bar (48 inches) will be 1 inch smaller in diameter than the other end, or a 1 ⁄ 4 -inch taper over a 1 ...

4. Sucker rod - Wikipedia

   en.wikipedia.org/wiki/Sucker_rod

   Sucker rods are also commonly available made of fiberglass in 37 1/2 foot lengths and diameters of 3/4, 7/8, 1, and 1 1/4 inch. These are terminated in metallic threaded ends, female at one end and male at the other. The surface unit transfers energy for pumping the well from the prime-mover to the sucker rod string.

5. 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 ...

6. .450 Black Powder Express - Wikipedia

   en.wikipedia.org/wiki/.450_Black_Powder_Express

   In 19th century Britain there were a large number of straight .450 cartridges developed of varying case lengths up to the 3 1 ⁄ 4-inch version. The .450 3 1 ⁄ 4-inch Black Powder Express was originally developed by Alexander Henry [4] as an experimental military cartridge for the 1869 British Army rifle trials that led to adoption of the ...

7. British Standard Cycle - Wikipedia

   en.wikipedia.org/wiki/British_Standard_Cycle

   1/4" diameter cycle thread nuts and bolts have the same 26tpi as 1/4" BSF, which means that they will fit each other in this diameter only. Traditionally the parts it would be found on are: Front axle and seat pin clamp bolt 5 ⁄ 16 inch (7.94 mm) diameter, 24 or 26 tpi threading; Rear axle 3 ⁄ 8 inch (9.53 mm) diameter, 26 tpi