Catherinian units

The system of Catherinian units, also known as statute units or 'Hall standards is the system of units defined in the 1799 Royal statute, Statutum Catarinæ de Mensurara et Pondere, commonly known as the Statute of Hall, after Catherine II's popular appellation, Catherine of Hall. The system is based on the traditional customary units used in Great Nortend up to and after the promulgation of the statute. The system was refined in the 1999 Royal statute, the Statute of Catherine the Second on Weights and Measures, which also added in new electro-magnetic units. It defines the units legally prescribed for trade purposes in Great Nortend, which does not use the metric system.

Length

• Point (pt, ⁗): 1/864 ft (typographic measure)
• Line (ln, ‴): 1/144 ft = 1 poppyseed
• Barleycorn (b): 1/36 ft
• Inch (in, ″): 1/12 ft
• Nail: 5/24 ft = 2½ in (draper's measure)
• Hand: 1/4 ft = 3 in (horse height measure)
• Span: 5/6 ft = 10 in (draper's measure)
• Foot (ft, ′): 1 ft = 12 in
• Ell: 1 ft 8 in (draper's measure)
• Yard (yd): 3 ft
• Cloth Yard: 3 ft 4 in (draper's measure)
• Fathom (fa): 6 ft
• Sea Fathom: 6 1/5 ft (nautical measure)
• Pole (rd): 18 ft
• Chain (ch): 72 ft
• Skein: 360 ft (yarn measure)
• Cable (cbl): 620 ft (nautical measure)
• Furlong (fur, f): 720 ft
• Mile (m, mi): 5760 ft
• Sea Mile: 6200 ft = 0·9995 international nautical miles (nautical measure)
• League: 17,280 ft (rare)
• Sea Legue: 18,600 ft (nautical measure)
• Spindle: 43,200 ft (yarn measure)

Area

• Perch (p): 1 p = 1 square pole
• Verge: 4 p = 4 poles (1 chain) by 1 pole (cadastral and taxation measure)
• Rood: 40 p = 40 poles (1 furlong) by 1 pole
• Acre (ac): 160 p = 40 poles (1 furlong) by 4 poles (1 chain)

• Oxgang: 14 ac (cadastral and taxation measure)
• Vergeland: 28 ac (cadastral and taxation measure)
• Hide: 112 ac

Liquid Volume

• Minim (♏︎): 1/5760 oc (apothecary's measure)
• Fluid Scruple (fl scr, ƒ℈): 1/288 oc (apothecary's measure)
• Fluid Drachm (fl dr, ƒʒ): 1/96 oc (apothecary's measure) = 1 teaspoon (tsp, c min)
• Dessertspoon (dssp, c med): 1/48 oc
• Tablespoon (tbsp, c mag): 1/24 oc
• Fluid Ounce (fl oz, ƒ℥): 1/12 oc
• Gill (gi): 1/4 oc
• Pint (oc, O): 1 oc
• Quart (qt): 2 oc
• Gallon (gal, C): 8 oc

• Sester: 32 oc = 4 gal (cask measure)
• Firkin (fk): 64 oc = 8 gal (cask measure)
• Fluid Foot (f ft): 72 oc = 9 gal
• Kilderkin (kk): 128 oc = 16 gal (cask measure)
• Ale Barrel (abl): 256 oc = 32 gal (cask measure)
• Wine Barrel (wbl): 280 oc = 35 gal (cask measure)
• Hogshead: 560 oc = 70 gal (cask measure)
• Butt: 1120 oc = 140 gal (cask measure)
• Tun: 2240 oc = 280 gal (cask measure)

Dry Volume

(Dry volume is 9/8 liquid volume)

• Dry Ounce (d oz, d℥): 1/12 oc
• Cup (cup): 1/2 d oc
• Dry Pint (s oc): 1 d oc
• Dry Quart (s qt): 2 d oc
• Pottle: 4 d oc
• Gellet (gel, C): 8 d oc

• Peck (pk): 16 d oc = 2 gel
• Kenning (ke): 32 d oc = 4 gel (rare)
• Bushel (bu): 64 d oc = 8 gel = 1 solid foot
• Coomb (cmb): 256 d oc = 32 gel
• Half: 1280 d oc = 160 gel
• Chaldron (ch): 2560 d oc = 320 gel

Solid Volume

• Solid Inch (s in): 1/1728 s ft
• Solid Foot (s ft): 1 s ft
• Solid Yard (s yd): 27 s ft

Mass and Weight

• Grain (g, G): 1/5760 lb
• Scruple (scr, ℈): 1/288 lb (apothecary's measure)
• Pennyweight (dwt): 1/240 lb (nowadays, three silver pennies weigh one pennyweight) (jeweller's measure)
• Drachm (dr, ʒ): 1/96 lb (apothecary's measure)
• Solden (s): 1/20 lb (nowadays, three shillings weigh one solden) (jeweller's measure)
• Ounce (oz, ℥): 1/12 lb
• March: 1/2 lb (jeweller's measure)
• Pound (lb, ℔): 1 lb (a sovereign coin weighs half an ounce in 22-carat gold)
• Butcher's, Fishmonger's and Spicer's Stone: 8 lb
• Blacksmith's and Chandler's Stone: 12 lb
• (Common) Stone (st): 14 lb
• Quarter (qu): 28 lb
• Hundredweight (cwt): 112 lb
• Ton (t): 2240 lb

Temperature

Degrees Marsdon (°M) is the unit of temperature. The freezing point of alcohol is defined as -200°M whilst the boiling point of alcohol is 200°M. Originally defined as 0 being the same as 0°F, being a solution of equal portions ice, water and ammonium chloride, and 200 being the boiling point of alcohol. The boiling point of water is approximately 245°M (244·95°M).

Electrical units

The base electrical unit is that of charge which is defined as the charge where two such charges placed one yard apart would have an electrostatic force of one pound-force between them, which is obtained through Coulomb's law where the prefactor or Coulomb's constant is 1. The unit of charge thus has the units of (yd.(lb)^(1/2)). The unit of potential energy or voltage is defined as one pound-yard by one yard-pound-root or symbolically, (yd.lbf)/(yd.(lb)^(1/2)). This is too large a unit for typical use, and so the Fitzon, a unit named after Lord Fitzon, a prominent natural physicist in the 20th century, is defined as 1/100,000 of this value.