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kind of Engines, as they stand compared to other com- 

 mon Mills, by a short measuring scale here inclosed. 

 And so I commend you to God^s favour and blessing, 

 as also my self and the whole business, which is the 

 continued prayer of 



Sir, 

 Your most faithful and obliged 

 Friend and humblest 

 Servant, 

 March the 10, 1651. — 



A Scale to measure the Uses and profits of my Engines 

 by as it stands compared with others. All commonly 

 known Causes of strong and swift Motion are 

 concluded under these 6. heads. 



Springs Men Water 



Weights Wind Horses. 



For the first, two, viz. Springs and Weights, they 

 are rather used for Watches, or Clocks, or .Tacks, then 

 for Mill-works, and are therefore not necessary to be 

 taken notice of here. 



For the third, viz. Men, they are used for strong 

 Motions often; but those motions are slowe, as 

 Graining up of Goods or the like, and as for Mill-works, 

 they are only used for grinding of small quantities of 

 Malt, in those Engines, commonly called Quernes or 

 Hand-Mills, and for turning of grinding Stones, and for 

 hand-Pumps which make but small resistance. 



