Imperial units of weight - avoirdupois
16 oz
= 1 lb
14 lb
= 1 stone
2 stone
= 1 qtr
4 qtrs
= 1 cwt
20 cwt
= 1 ton
oz - ounce
lb - pound
qtr - quarter
cwt - hundredweight
112 lb
= 1 cwt
8 stone
= 1 cwt
2240 lb
= 1 ton