# Aarði measurement

The system of measurement used in Aarð is closer to *our* US/Imperial system than metric. It was based on early measurement using one's body, and was standardized by the Ðanmar Empire.

## Linear Measure

The basic unit of linear measure is the standard inch (si), equivalent to about 1.27 of *our* inches or 3.2258 cm.

• 1 standard foot (sf) = 8 si
• 1 hand (h) = 5 si
• 1 walk (wk) = 144 sf
• 1 standard league (sl) = 24 wk (3456 sf)
• 1 great league (gl) = 6 sl (144 wk or 20736 sf)

These are related to metric and the US system as follows:

• 1 sf = 25.8064 cm (10.16 in)
• 1 h = 16.129 cm (6.35 in)
• 1 wk = 37.161216 m (121.92 ft)
• 1 sl = 891.869184 m (2926.04 ft or 0.554 mi)
• 1 gl = 5.351215204 km (3.325 mi)

US equivalents are approximate; metric equivalents are closer to the actual values.

## Time Measure

Aarði time measurement is based on subdivisions of the 23.37819831 hour Aarði day.

• 1 tick = 4.058714984 seconds
• 1 moment = 6 ticks (24.35228991 seconds)
• 1 hour = 144 moments (58 minutes 26.7297465 seconds)
• 1 watch = 4 hours (3 hours 53 minutes 8.61942 seconds)
• 1 day = 6 watches (23 hours 22 minutes 41.5190768 seconds)
• 1 moon = 20 days (19 days 11 hours 33 minutes 50.27815411 seconds)
• 1 year = 13 moons (253 days 6 hours 19 minutes 53.778 seconds)

## Measure of Weight

The basic unit of weight is the grain (gr).

• 1 pebbleweight (pw) = 24 grains
• 1 standard pound (sp) = 12 pebbleweights
• 1 haul (hl) = 144 standard pounds
• 1 ton (not abbreviated) = 144 hauls (20,736 sp)
• 1 long ton (lt) = 72 tons (1,492,992 sp)