ah-il

A unit of measure equal to the distance from the elbow to the tip of the middle finger, c. 18 inches, analoguous to the Urth cubit; 10 ah-il equal one ah-ral.

Cloth is measured in the ah-il, which is the length from the elbow to the tip of the middle finger, and the ah-rah, which is ten ah-ils.
Tribesmen of Gor, page 50

ah-ral

A unit of measure equalling 10 ah-il, or approx. 180 Urth inches.

foot

A unit of measurement equal to 10 horts, or 12 1/2 Urth inches.

The Gorean foot is, in my estimation, just slightly longer than the Earth foot; based on the supposition that each of its ten Horts is roughly one and one-quarter inches long, I would give the Gorean foot a length of roughly twelve and one-half inches, Earth measure.

Raiders of Gor, page 127

hort

A measure of distance equal to 1- 1/4 inches
huda: a unit of measure equalling 5 tefa

A handful with the five fingers closed, not open, is a tef. Six such handfuls constitutes a tefa, which is a tiny basket. Five such baskets constitutes a huda.
Tribesmen of Gor, page 46

pasang

Measure of distance equalling .7 miles

The pasang is a measure of distance on Gor, equivalent approximately to .7 of a mile.
Tarnsman of Gor, page 58

stone

A unit of measurement equal to 4 Urth pounds

I have calculated this figure from the Weight, a Gorean unit of measurement based on the Stone, which is about four Earth pounds.
Raiders of Gor, page 127

talu

A unit a measure equalling 2 gallons

A talu is approximately two gallons. A talu bag is a small bag.
Tribesmen of Gor, page 242

tef

A unit of measure, consisting of a handful of whatever produce (such as dates) is being weighed; 6 tefs equal one tefa.
tefa: 1) a unit of measure equalling 6 tefs, or handfuls; 5 tefas equal 1 huda; 2) a small basket.

weight

A unit of measurement equal to 10 Stone, or 40 Urth pounds.

I have calculated this figure from the Weight, a Gorean unit of measurement based on the Stone, which is about four Earth pounds.
Raiders of Gor, page 127