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2. Sewing machine needle - Wikipedia

   en.wikipedia.org/wiki/Sewing_machine_needle

   In both cases, a larger number corresponds to a larger, heavier needle. Most sewing machine needles will have packaging that gives both of these numbers in its size description — (e.g. as either 100/16 or 16/100). The length of all sewing machine needles has been standardized and does not require a separate code.

3. Hypodermic needle - Wikipedia

   en.wikipedia.org/wiki/Hypodermic_needle

   Various needle lengths are available for any given gauge. 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 ...

4. French catheter scale - Wikipedia

   en.wikipedia.org/wiki/French_catheter_scale

   For instance, a two-way catheter of 20 Fr and a three-way catheter of 20 Fr have the same outer diameter, but the three-way catheter has an additional channel for irrigation, reducing the size of its drainage channel. The French gauge system was devised by Joseph-Frédéric-Benoît Charrière, a 19th-century Parisian surgical instrument maker. [3]

5. Gauge (knitting) - Wikipedia

   en.wikipedia.org/wiki/Gauge_(knitting)

   Generally, the gauge should match to better than 5%, corresponding to 1" of ease in a 20" width. Similar concerns apply to the number of rows per inch. The gauge can be adjusted by changing needle size, without changing the pattern, stitch, yarn, or habits of the knitter. Larger needles produce a smaller gauge (fewer stitches per inch) and ...

6. 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). The increments between gauge sizes are not linear and vary. [2]

7. Knitting needle - Wikipedia

   en.wikipedia.org/wiki/Knitting_needle

   A needle gauge makes it possible to determine the size of a knitting needle. Some may also be used to gauge the size of crochet hooks. Most needles come with the size written on them, but with use and time, the label often wears off, and many needles (like double-pointed needles) tend not to be labelled. Needle gauges can be made of any ...