146 BENJ. PIKES, JR., DESCRIPTIVE CATALOGUE. 



Fig. 153. 



BENJ* PtKE J 293- SRQADWfl 



The Pulleys. (Fig. 153, as above.) The pulleys are 

 mounted on a neat polished mahogany base, 30 inches long 

 and 8 inches wide, with turned columns, 24 inches high, be- 

 hind which are fastened narrow scales, divided into inches 

 and parts thereof, the one scale numbering from the top, 

 and the other from the bottom, having a cord drawn across 

 the frame at each inch, dividing the whole into twenty-four 

 equal parts, for observing the distance each weight passes 

 through in use. The pulleys and their mountings are made 

 of brass, highly polished, having steel centres, connected 

 with which is a set of brass weights from ^ oz. to 1 6 ounces. 



