Sentence:  Seven pounds make a clove, 2 cloves a stone, 2 stone a tod, 6½ tods a <WSD>wey</WSD>, 2 <WSD>weys</WSD> a sack, 12 sacks a last. ... It is to be observed here that a sack is 13 tods, and a tod 28 pounds, so that the sack is 364 pounds. 
Meaning of the word marked with <WSD> tags:  An old English measure of weight containing 224 pounds; equivalent to 2 hundredweight.