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  2. Trailer connectors in North America - Wikipedia

    en.wikipedia.org/wiki/Trailer_connectors_in...

    4-pin round connector (Towing vehicle side) This connector is available in some cases instead of the flat 4-pin connector. It is less common on the U.S.-built vehicles, than 4-pin flat connector, but is still used in the older truck and SUV setups.

  3. Trailer connectors in Australia - Wikipedia

    en.wikipedia.org/wiki/Trailer_connectors_in...

    The image of the 7 and 12 pin flat plugs are from the cable entry view (and possibly the images of the round connectors too). Please see reference [2] (VSB1 section 14) for front image. Reference [1] Narva wiring diagrams also have the diagrams cable entry view. If you want the front view images in colour see [3]

  4. List of battery sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_battery_sizes

    Flat round (one each end) H: 50 L: 25 W: 15 Used in older instruments. [246] the Regency TR-1 (first transistor radio), [247] and old battery–capacitor flashes. These are also sometimes known as B batteries, but are very distinct from actual B cell batteries. 30-volt: Eveready 413: 20F20 (Zn/MnO 2) 210: 140: 30 V (20 cells) Flat round (one ...

  5. Roundness - Wikipedia

    en.wikipedia.org/wiki/Roundness

    Having a constant diameter, measured at varying angles around the shape, is often considered to be a simple measurement of roundness.This is misleading. [3]Although constant diameter is a necessary condition for roundness, it is not a sufficient condition for roundness: shapes exist that have constant diameter but are far from round.

  6. Rounding - Wikipedia

    en.wikipedia.org/wiki/Rounding

    If x is negative, round-down is the same as round-away-from-zero, and round-up is the same as round-toward-zero. In any case, if x is an integer, y is just x . Where many calculations are done in sequence, the choice of rounding method can have a very significant effect on the result.

  7. List of electronic component packaging types - Wikipedia

    en.wikipedia.org/wiki/List_of_electronic...

    Quad flat package : various sizes, with pins on all four sides Low-profile quad flat-package ( LQFP ): 1.4 mm high, varying sized and pins on all four sides Plastic quad flat-pack ( PQFP ), a square with pins on all four sides, 44 or more pins

  8. Bar stock - Wikipedia

    en.wikipedia.org/wiki/Bar_stock

    The same is true of metal bar stock. The most common shapes are round bar (also called rod), rectangular bar (including square bar, the special case of equal sides), and hexagonal bar (usually called hex bar for short). Tube and pipe are similar, but have hollow centers and are traditionally not called "bar" in industrial usage. (However, a ...

  9. Roundness (geology) - Wikipedia

    en.wikipedia.org/wiki/Roundness_(Geology)

    Schematic representation of difference in grain shape. Two parameters are shown: sphericity (vertical) and rounding (horizontal). Rounding, roundness or angularity are terms used to describe the shape of the corners on a particle (or clast) of sediment. [1] Such a particle may be a grain of sand, a pebble, cobble or boulder.