Sentence:  The only other table, generally used by operative weavers, is that for setting the <WSD>heddles</WSD>, so as to correspond with the reed. Few weavers are in possession of a sufficient variety of <WSD>heddles</WSD>, to suit every reed in which they may be employed to weave cloth. 
Meaning of the word marked with <WSD> tags:  A component in a loom, being one of a number of similar components, through the eye of each of which a distinct strand of the warp is threaded.