Sentence:  Sarah Gross , a dress shop proprietor , paid $ 1020 to a masseur , and Mr. A. , a laborer , paid $ 4200 to a chiropractor for treatment with two fake health <WSD>machines</WSD> - the `` radioclast '' and the `` diagnometer '' . 
Meaning of the word marked with <WSD> tags:  any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks