A "link" is a unit of length that is equivalent to 1/100th of a chain. In the United States customary system of measurement, one link is equal to 7.92 inches or 0.201168 meters. It is primarily used in surveying and land measurement.
Links are often used in conjunction with other surveying units like chains and rods to measure distances on land, especially for large plots or parcels of land. The term "link" is rarely used in everyday conversation or modern applications outside of surveying and related fields. Instead, more common units like feet, yards, or meters are used for measuring length in most contexts.
A "centiinch" is not a standard or widely recognized unit of measurement. In the International System of Units (SI), length is typically measured in meters and its subunits, such as centimeters (1 meter = 100 centimeters) and millimeters (1 meter = 1,000 millimeters).
The term "centiinch" appears to be a combination of two different measurement systems. "Centi-" is a prefix used in the metric system to denote a factor of 1/100, while "inch" is a unit of length in the imperial system commonly used in the United States and some other countries.
If someone is using the term "centiinch," it may be intended as a humorous or informal way to express a very small length in a mixed-unit fashion, but it is not part of any standard or recognized system of measurement. To avoid confusion, it's generally best to use established units like centimeters or millimeters when measuring small lengths in the metric system, or inches when using the imperial system.