66 



TABLE 33.— EQUIVALENTS OF BRITISH IMPERIAL AND METRIC WEIGHTS 

 AND MEASURES (continued) 



(For U. S. Weights and Measures, see Table 32.) 

 Part 3. — Imperial to metric 



LINEAR MEASURE 



1 inch 



1 foot (12 in.) . . 

 1 yard (3 ft) . . 

 1 pole (Si yd) . . 

 1 chain (22 yd orl 

 100 links) J 

 1 furlong (220 yd) 

 1 mile (1,760 yd) . 



1 yard 



= 25.400 millimeters 

 = 0.30480 meter 

 = 0.914399 meter 

 = 5.0292 meters 



= 20.1 168 meters 



= 201.168 meters 

 =s 1.6093 kilometers 

 _ f 1420210. X CdrX 

 - I (Tutton 1932) 



SQUARE MEASURE 



lin. 2 = 



1 ft 2 (144 in. 2 ) . .= 

 1 yd 2 (9 ft 2 ) . . . = 

 1 perch (30i yd 2 ) = 

 1 rood (40 perches) = 

 Iacre (4840 yd 2 ) = 



6.4516 cm 2 



9.2903 dm 2 



0.836126 m 2 

 25.293 m 2 

 10.117 ares 



0.40468 hectare 



1 mi 2 (640 acres) = 259.00 hectares 



CUBIC MEASURE 

 lin. 8 . . . .= 16.387 cm 3 

 lft 3 (1728 in. 3 ) = {°-°l £317 rn* or 28.317 



1 yd 3 (27 ft 8 ). . = 0.76455 m 3 



APOTHECARIES' MEASURE 



1 gallon (8 pints orl _ . e 4 r Q6 ^ .;._„ 

 160 fluid ounces)/ ~ 4 - Miywi llters 



1 fluid ounce, f 3 (&\ _ ?R 41 ?-? rrn s 

 drachms) J ~ ^ AU6 cm 



f 3 



}= 



3.5515 cm 8 



1 fluid drachm, 

 (60 minims) 

 1 minim, TT[ (0.911461 _ 00S919 _. 



grain weight) J ~~ U - U5yiy cm 



Note. — The apothecaries' gallon is of the same 

 capacity as the Imperial gallon. 



MEASURE OF CAPACITY 



1 gill . . . . 

 1 pint (4 gills) . 

 1 quart (2 pt) 

 1 gallon (4 qt) 

 1 peck (2 gal) . 

 1 bushel (8 gal) 

 1 quarter (8 bu) 



= 1.42 deciliters 

 == 0.568 liter 

 = 1.136 liters 

 = 4.5459631 liters 

 = 9.092 liters 

 = 3.637 dekaliters 

 = 2.909 hectoliters 



AVOIRDUPOIS WEIGHT 



1 grain . . . . 



1 dram 



1 ounce (16 dr) . . 

 1 pound (16 oz orl 



7,000 grains)J 

 1 stone (14 lb) . . 

 1 quarter (28 lb) 

 1 hundredweight! 



(112 lb) J 



1 ton (20 cwt) . 



= { 



64.8 milligrams 



1.772 grams 

 28.350 grams 



0.45359243 kg 



6.350 kg 

 12.70 kg 

 50.80 kg 

 0.5080 quintal 

 1.0160 tonnes or 

 1016 kilo- 

 grams 



TROY WEIGHT 



1 troy ounce (480 ) = 3U0 35 grams 



grains av) J 6 



1 pennyweight (24 | = L5552 s 



grains) J 6 



Note. — The troy grain is of the same weight as 

 the avoirdupois grain. 



APOTHECARIES' WEIGHT 



1 ounce (8 drachms) . .=31.1035 grams 

 1 drachm, 3i (3 scruples) = 3.888 grams 

 1 scruple, 3i (20 grains) = 1.296 grams 



Note. — The apothecaries' ounce is of the same 

 weight as the troy ounce. The apothecaries' 

 grain is also of the same weight as the avoir- 

 dupois grain. 



Note. — The Yard is the length at 62 °F, marked on a bronze bar deposited with the 

 Board of Trade. 



The Pound is the weight of a piece of platinum weighed in vacuo at the temperature of 

 0°C, and which is also deposited with the Board of Trade. 



The Gallon contains 10 lb weight of distilled water at the temperature of 62° F, the 

 barometer being at 30 inches. 



(continued) 



SMITHSONIAN PHYSICAL TABLES 



