Shilling Units

an extension to the metric system, designed to bring the strength of divisible, well scaled units for daily quantities, named for a shilling being a 20th of a pound

it's designed around scales of half-units, such as a metric pound of 0.5kg, or a metric knot of 0.5m/s, and monosyllabic names for metric base units have been selected

the scales have been selected so that 1 mile per hour is 1 cord per second, every unit is a subdivision of the next largest one, you can divide a pound into quarters easily, you have an equivalent of ounces, inches, and fluid ounces (clearly a useful size!), and you can divide a wey into 10 stone or 100 pounds or 10,000 pennies

major units are in bold, minor ones are ensmallened and italic, but dw about memorisation, if these were the norm then you could probably get by just with the hour units, the pound units, and the shilling units

Scale	Metric	Pounds		Weights	Eng		Lengths	Eng		Volumes	Imp	US
Hour	1.8k	x3,600		Load	2 sh tons		Mile	1.1mi		Cask	396 gal	476 gal
Wey	50	x100		Wey	110 lb		Rope	55 yd		Bushel	11 gal	13 gal
Stone	5	x10		Stone	11 lb		Pole	5.5 yd		Gallon	1.1 gal	1.3 gal
Base	1	x2		Grav	2.2 lb		Yard	1.1 yd		Quint	0.9 qt	1.1 qt
Pound	500m	x1		Pound	1.1 lb		Cord	20 in		Pint	0.9 pt	1.1 pt
Half	250m	/2		Mark	9 oz		Link	10 in		Cup	0.9 cup	1.1 cup
Quart	125m	/4		Crown	4.4 oz		Fist	5 in		Mug	0.9 gill	1.1 gill
Shilling	25m	/20		Ounce	0.9 oz		Inch	0.98 in		Shell	0.9 floz	0.9 floz
Cent	5m	/100		Penny	0.2 oz		Pick	0.2 in		Spoon	1 tsp	1 tsp

and here's some more extra sets!

(energy units start with kilojoules instead of half joules because that way you end up with kilowatt hours, and as a bonus they approximate the energy needed to heat an equivalent mass of water by 1 degree fahrenheit or 1 degree temp (temp is the one i actually care about, fahrenheit is worse than celsius, and that's a low bar!))

(force units start with 10N because that way they approximate the weight of equivalent masses (should be closer to 9.81 than 10, but that'd be terrible and bad for units, so we're using 10))

(land area units are named that way because it's like traditional scottish ones, which were named for cost rather than proportional weight so it doesn't really apply but it's cool so im including it)

Scale	Metric	Pounds		Energies	Metric	Eng		Forces	Metric	Eng		Areas	Eng
Hour	1.8k	x3,600		Loadtemp	1 kWh	3.4k BTU		Loadweight	18 kN	2 tonf		Loadland	7 sq mi
Wey	50	x100		Weytemp	100 kJ	1900 BTU		Weyweight	300 N	67 lbf		Weyland	0.2 sq mi
Stone	5	x10		Stonetemp	10 kJ	10 BTU		Stoneweight	50N	11 lbf		Stoneland	12.3 acre
Base	1	x2		Gravtemp	2 kJ	2 BTU		Gravweight	10 N	2.25 lbf		Gravland	2.5 acre
Pound	500m	x1		Poundtemp	1 kJ	1 BTU		Poundweight	5 N	1.1 lbf		Lane	1.23 acre
Half	250m	/2		Marktemp	500 J	0.5 BTU		Markweight	2.5 N	9 ozf		Markland	0.6 acre
Quart	125m	/4		Crowntemp	250 J	0.25 BTU		Crownweight	1.25 N	4.5 ozf		Crownland	0.3 acre
Shilling	25m	/20		Ouncetemp	50 J	12 cal		Ounceweight	250 mN	0.9 ozf		Ounceland	0.06 acre
Cent	5m	/100		Spoontemp	10 J	2.4 cal		Spoonweight	50 mN	0.2 ozf		Spoonland	540 sq ft