21 or 22 gage
vacuum tube
Syringe
Most conifers have needles that serve the same purpose as leaves.
Pluviometer, ombrometer, udometer, and hyetometer are all terms meaning rain gauge, but rain gauge is the common term most often used and understood.
Most "normal" piercings are 18 gauge, so yes, I dont see why not.
For vaccines or to draw blood I would use a 20 gauge needle on adult sheep and a 22 gauge on a lamb. To administer medications such as penicillin, I would use a 16 or 18 gauge depending upon the drug and the volume needed.
Gauge is the term that indicates the diameter of the needle. Most commonly the needles that are used for medical purposed range from 7 Gauge to 33 Gauge, according to the Stubs scale. 7 Gauge needle will have the largest diameter while as the number increase, the diameter decreases. Therefore the 33 Gauge needle has the smallest diameter. So a 26 Gauge needle will have a smaller diameter than that of the 18 Gauge needle.
23
Gauge is a measure of how large the opening of the needle is. The larger the number the smaller the hole. Most venipuncture is done with a 16-24 gauge needle, depending on the size of the patient and the location of the vein. A 10 gauge needle would be huge.
Most likely the cluster, but it could be the sending unit.
Size and condition of the vein
The most common site for a blood draw is the antecubital vein.
Usually a large bore needle is used in emergent situations, such as an 18-gauge or 16-gauge. The old standard was to use a catheter no smaller than a 20-gauge. Research shows that a 22-gauge needles will suffice without significant hemolysis (blood cell rupture). Remember that the bigger the gauge number, the smaller the diameter.Miller MA, Schlueter AJ. Transfusions via hand-held syringes and small-gauge needles as risk factors for hyperkalemia. Transfusion 2004;44:373-381.Frelich R, Ellis MH. The effect of external pressure, catheter gauge, and storage time on hemolysis in RBC transfusion. Transfusion 2001;41:799-802.
Most piercings can be done with any size needle, but most common for a lip is anywhere between 18g and 10g. Most common is 16g or 14g, depending on the piercers preference.
Most piercings are pierced with a 16 gauge needle, but if you want to stretch it, I wouldn't go any larger than a 10.
Vein
Brachial.