Weights & Measures
Liquid Volume
The Gill, as a measure of liquid volume is used only once. But in another reference, "The leech plant can draw a considerable amount of blood in a short time". Perhaps this means a gill is a "considerable amount". In any event, no Earth comparison is stated.
A Talu is approximately two gallons (7.57 liters).
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Dry Volume Measurements
A Tef is a handful with the five fingers closed, not open.
A Tefa is six such handfuls, which is a tiny basket.
A Huda is five of these tiny baskets.
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Weight Measurements
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The Stone is about four Earth pounds (1.81kg).
A Weight is ten stone.
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Distance Measurements
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The Hort is approximately an inch and a quarter in length (31.75mm).
The smallest actual measurement described is a tenth of a hort which would equal an eighth of an inch (3.175mm).
Tape measures, marked in horts, are used to measure slaves.
The Hand is used as a measure of height in several places but no actual comparison in inches is given. On Earth, horses are measured in hands. One hand equals 4 inches (101.6mm).
The Gorean Foot or Merchant Foot is ten horts or roughly twelve and a half inches (317.5mm).
Cloth is measured in the Ah-il, which is the length from the elbow to the tip of the middle finger.
The Ah-ral is ten ah-ils.
A Pace is close to the English yard (91.44cm or 0.9144m).
A Spear Length is used a few times and based on other references this would be six to seven feet (1.82 - 2.13m).
A Kaiila Length is yet another distance measurement used without any comparison in feet or yards.
A Pasang is approximately .7 of a mile (1.12km).
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Compass Direction Measurements
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All directions on the planet are calculated from the Sardar Mountains. The Gorean compass is divided into eight main divisions, and each of these are also subdivided. There is also a system of latitude and longitude figured on the basis of Ahn, Ehn and Ihn.
Ta-Sardar-Var ~ North ~ Appears on all Gorean maps
Ror
Rim ~ East
Tun
Vask or Verus Var ~ South
Cart
Klim ~ West
Kail