Hypodermic needles are measured by their gauge and length.
Gauge and Length
The primary measurements for hypodermic needles are gauge and length.
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Gauge: The gauge of a needle, abbreviated as "G", indicates the size of the needle's hole. A higher gauge number means a smaller hole. For example, a 25G needle has a smaller hole than an 18G needle.
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Length: The length of the needle is usually listed after the gauge number.
Here's how to interpret these measurements:
| Measurement | Description |
|---|---|
| Gauge | Indicates the diameter of the needle's bore (hole). Higher number = smaller hole. |
| Length | The length of the needle shaft, usually measured in inches. |
Example: A 25G 1" needle is 25 gauge and 1 inch long.
