11. The Dirham and its Equivalents
The old Arabic dirham, according to Webster's and other dictionaries, equaled 45 English grains, and this weight seems to fulfill the requirements of the text of this book. On this basis the figures given on page 102 may be conveniently translated and tabulated as follows:
The weight of an average American string made of linen thread is about 150 grains, with considerable variation.