Systems of measurement

A system of measurement is a collection of units of measurements and rules that relate them to one another. Systems of measurement have historically been, and continue to hold great importance to commerce and science, and have long been subject to regulation and formal definitions.

Izeryker Realm Standard
The Izeryker Realm Standard is fundamentally derived from the nautical mile, also known was the Izeryker Mile, derived from one minute ($1⁄60$ of a degree) of latitude on Iridia's surface. This unit of measure was first used in the 14th century during Izeryk's era of exploration, and was standardized as the national system of measure in 1784. As part of standization, subunits of measurement were artificially created to make the system more useable on land. These included the stride, pace, inch, and thou. Initially, an Izeryker inch was standardized as $1⁄50$ of a pace, but this was restandardized as $1⁄25$ of a pace in 1866.

Kachotjan Imperial Standards
The measurement standards of Kachotja were formalised in 1865, based on the pre-existing system of using riding, archery and body comparison and metaphor as approximate measurement. The prime measurement of the Kachotjan standard can be taken as the Sajartartu, based on the length between ones hands when holding a bow at full draw.