It is used to help people who struggle with threading a needle to thread a needle.
Absolutely! Especially as you get older or are sewing in low light that tiny eye of the needle can be difficult to find. It also helps with older threads that may have started to unravel thereby making it all but impossible to thread the needle.
They can be, but I don't think that they are necessary. Needles usually thread from front to back, so I find that it is just as quick to do it by myself. If the auto-threader doesn't line up perfectly, it can be more trouble than it is worth on a sewing machine. However, if you are looking at a serger with built-in threaders I would say to go for it! Some loopers are very hard to thread. Kate
A hypotonic needle is a needle that is a non coring needle. A hypertonic needle is a coring needle. Both of these needles are used in IV's with a hypotonic needle used for hypotonic solutions.
a needle used for clay
A small, thin needle called a butterfly needle or a catheter needle is commonly used for chemotherapy. These needles are designed to be gentle on veins and can accommodate the flow of chemotherapy drugs.
A pipe threader is used to thread the inside of pipes with accessories such as a die head, either manually or with a machine. Die heads are usually used with lathes,turret lathes, CNC lathes, or screw machines.
12 threads per inch. right handed
if you got pricked by the needle and the needle was then used by a person positive with AIDS
In a needle cricothyroidotomy, the doctor uses a 12- or 14-gauge catheter and needle assembly.
it depends on what the needle is being used for
Needle work done with a needle with a small hook at one end of the needle
A packing needle is a large needle used for heavier sewing, such as for sewing up canvas packages.