Comprehensive Imperial, or Princian Comprehensive Imperial, is an adaptation of the British Imperial system of measurement that is currently used by the Princian Commonwealth in coexistence with the Metric system. Many units are the same in the British Imperial system as they are in Comprehensive Imperial but with a few additions and some refinement.
Units of length
Standard units
| Unit
|
Symbol
|
Relative to previous
|
| Line
|
‴
|
|
| Barleycorn
|
bc
|
4‴
|
| Inch
|
″
|
3bc
|
| Shaftment
|
shft
|
6″
|
| Foot
|
′
|
2shft
|
| Yard
|
yd
|
3′
|
| Fathom
|
ftm
|
2yd
|
| Chain
|
ch
|
11ftm
|
| Furlong
|
fur
|
10ch
|
| Mile
|
mi
|
8fur
|
| League
|
lea
|
3mi
|
| Stage
|
stg
|
10lea
|
Customary units
| Unit
|
Symbol
|
Composition
|
| Rod
|
rd
|
2ftm-1yd-1′-1shft
|
| Romslength
|
rm
|
2ftm-1yd-2′-1shft-5″-2bc-3‴
|
| Exactuslength
|
ex
|
1ftm-1yd-1′-1shft-1″-1bc-1‴
|
| Cleague
|
clea
|
2mi-7fur-9ch-10ftm-1yd-2′-1shft-5″-2bc-3‴
|
| Roadinlength
|
rl
|
2fur-5ch-5ftm
|
| Paperheight
|
ph
|
√2ftm or 1ftm-2′-5″-2bc-2‴
|
Units of area
Acre-based units
| Unit
|
Symbol
|
Relative to previous
|
| Acre
|
ac
|
1fur × 1ch
|
| Oxgang
|
ox
|
15ac
|
| Virgate
|
vr
|
2ox
|
| Carucate
|
cr
|
4vr
|
Square-based units
| Unit
|
Symbol
|
Composition
|
| Square Line
|
sq ln
|
1‴ × 1‴
|
| Square Barleycorn
|
sq bc
|
1bc × 1bc
|
| Square Inch
|
sq in
|
1″ × 1″
|
| Square Shaftment
|
sq shft
|
1shft × 1shft
|
| Square Foot
|
sq ft
|
1′ × 1′
|
| Square Yard
|
sq yd
|
1yd × 1yd
|
| Square Fathom
|
sq ftm
|
1ftm × 1ftm
|
| Square Chain
|
sq ch
|
1ch × 1ch
|
| Square Furlong
|
sq fur
|
1fur × 1fur
|
| Square Mile
|
sq mi
|
1mi × 1mi
|
| Square League
|
sq lea
|
1lea × 1lea
|
| Square Stage
|
sq stg
|
1stg × 1stg
|
Customary units
| Unit
|
Symbol
|
Composition
|
| Perch
|
pch
|
1rd × 1rd
|
| Rood
|
rood
|
1fur × 1rd
|
Paper sizes
| Size
|
Composition
|
Notes
|
| P(-5)
|
1stg × √2stg
|
Largest paper size
|
| P(-4)
|
1lea × √2lea
|
|
| P(-3)
|
1mi × √2mi
|
|
| P(-2)
|
1fur × √2fur
|
|
| P(-1)
|
1ch × √2ch
|
|
| P(0)
|
1ftm × 1ph
|
Base paper size
|
| P(1)
|
1yd × √2yd
|
|
| P(2)
|
1′ × √2′
|
|
| P(3)
|
1shft × √2shft
|
|
| P(4)
|
1″ × √2″
|
|
| P(5)
|
1bc × √2bc
|
|
| P(6)
|
1‴ × √2‴
|
Smallest paper size
|
Units of volume
Standard units
| Unit
|
Symbol
|
Relative to previous
|
| Minim
|
min
|
|
| Dram
|
dm
|
60min
|
| Pint
|
pt
|
160dm
|
| Gallon
|
gal
|
8pt
|
Units of weight
Standard units
| Unit
|
Symbol
|
Relative to previous
|
| Grain
|
gr
|
|
| Drachm
|
dch
|
60gr
|
| Ounce
|
oz
|
8dch
|
| Pound
|
lb
|
16oz
|
| Stone
|
st
|
14lb
|
| Quarter
|
qr
|
2st
|
| Hundredweight
|
cwt
|
4qr
|
| Ton
|
t
|
20cwt
|
Degrees of temperature
| Unit
|
Scale
|
Equivalence
|
In Celsius
|
| Finite degrees madoc
|
0°M⁻
|
Absolute zero
|
−273.15°C
|
| 100°M⁻
|
Freezing point of H2O (water) under 1,013.25 hPa of pressure
|
0°C
|
| Infinite degrees madoc
|
0°M⁺
|
| 100°M⁺
|
Boiling point of C2H6O (ethanol) under 1,013.25 hPa of pressure
|
78.37°C
|