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 10 Cath. I, p. 1, commonly known as the Statute of Hall, after Catherine I'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 (el): 1 ft 6 in
• Draper's Ell: 1 ft 8 in (draper's measure)
• Yard (yd): 3 ft
• Draper's 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

• Fluid Minim (fmm): 1/368640 pt (~1 μL)
• Drop (gt): 1/5760 pt (apothecary's measure)
• Fluid Scruple (fl scr, ƒ℈): 1/288 pt (apothecary's measure)
• Fluid Drachm (fl dr, ƒʒ): 1/96 pt = 1 teaspoon (tsp, c min)
• Dessertspoon (dssp, c med): 1/48 pt
• Tablespoon (tbsp, c mag): 1/24 pt
• Fluid Ounce (fl oz, ƒ℥): 1/12 pt
• Gill (gi): 1/4 pt
• Pint (pt, O): 1 pt
• Quart (qt): 2 pt
• Gallon (gal, C): 8 pt
• Sester: 24 pt = 3 gal (cask measure)
• Firkin (fk): 120 pt = 15 gal (cask measure)
• Fluid Foot (fl ft): 72 pt = 9 gal
• Barrel (bl): 480 pt = 60 gal (cask measure)
• Hogshead: 720 pt = 90 gal (cask measure)
• Butt: 1440 pt = 180 gal (cask measure)
• Tun: 2880 pt = 360 gal (cask measure)

Dry Volume

• Teaspoon (tsp): 1/96 oc
• Dessertspoon (dssp): 1/48 oc
• Tablespoon (tbsp): 1/24 oc
• Cup (cup): 1/2 oc
• Pottle (oc): 1 oc
• Gellet (ct): 8 oc
• Peck (pk): 16 oc = 2 ct
• Kenning (ke): 64 oc = 8 ct = 1 solid foot
• Bushel (bu): 128 oc = 16 ct = 2 solid feet
• Coomb (cmb): 256 oc = 32 ct
• Half: 1280 oc = 160 ct
• Chaldron (ch): 2560 oc = 320 ct

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

• Minim (mm): 1/368640 lb (~ 1 mg)
• 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)
• Lead (ld): 1/24 lb
• Solderweight (swt): 1/20 lb (nowadays, three silver shillings weigh one solden) (jeweller's measure)
• Ounce (oz, ℥): 1/12 lb
• March: 1/2 lb (jeweller's measure)
• Pound (lb, ℔): 1 lb s
• Grocer's, Greengrocer's, Butcher's, Fishmonger's and Spicer's Stone: 8 lb
• Stone (st): 12 lb
• Hundredweight (cwt): 120 lb
• Ton (t): 2880 lb

Temperature

Degrees Marsdon (°M) is the unit of temperature. Originally, it was defined as 0° being the same as 0°F, being a solution of equal portions ice, water and ammonium chloride, 212° being the boiling point of alcohol and -212° being the freezing point of alcohol. The scale was redefined such that 220° is the boiling point of water and 40° the freezing point, meaning that the boiling point of alcohol is now 212·414° and the freezing point -211·01°.

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.√lbf. The unit of potential energy or voltage is defined as one pound-yard by one yard-pound-root or symbolically, yd.lbf/_yd.√lbf . 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.