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  2. Porter-Cable - Wikipedia

    en.wikipedia.org/wiki/Porter-Cable

    In 1926, Porter-Cable began to develop a niche in portable electric power tools when Chief Engineer Art Emmons invented the portable electric belt sander, called the Take-About Sander. In 1929, Emmons invented the helical drive circular saw, a compact, lightweight design that is still the most widely used circular saw design produced today.

  3. Birmingham gauge - Wikipedia

    en.wikipedia.org/wiki/Birmingham_gauge

    The Birmingham gauge ranges from 5/0 or 00000, the lowest gauge number corresponding to the largest size of 0.500 inches (12.7 mm), to 36, the highest gauge number corresponding to the smallest size of 0.004 inches (0.10 mm).

  4. Microneedles - Wikipedia

    en.wikipedia.org/wiki/Microneedles

    Dermarollers are hand-held rollers equipped with a total of 192 solid steel micro-sized needles arranged into 24 arrays, lengths ranging from 0.5-1.5mm. [ 31 ] [ 33 ] With the growing popularity of microneedling, MNs have also been commodified into home care Dermarollers, which are similar to medical dermarollers, except that the needles are ...

  5. Knitting needle - Wikipedia

    en.wikipedia.org/wiki/Knitting_needle

    Flexi single-pointed needles have a rigid needle part, a plastic cable and a stopper at the end of the cable. Flexi single-pointed needles can be bought readymade or it is possible to make them yourself, if you have a set of interchangeable circular knitting needles and cables and stoppers.

  6. Conveyor belt - Wikipedia

    en.wikipedia.org/wiki/Conveyor_belt

    Single flight means the load is not transferred, it is a single continuous system for the entire length. This conveyor is a cable belt conveyor system with a 31-kilometre-long (19 mi) conveyor feeding a 20-kilometre-long (12 mi) conveyor. Cable belt conveyors are a variation on the more conventional idler belt system.

  7. Hypodermic needle - Wikipedia

    en.wikipedia.org/wiki/Hypodermic_needle

    Needles in common medical use range from 7 gauge (the largest) to 34 (the smallest). 21-gauge needles are most commonly used for drawing blood for testing purposes, and 16- or 17-gauge needles are most commonly used for blood donation, as the larger luminal cross-sectional area results in lower fluid shear, reducing harm to red blood cells ...

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