102 ACCURACY. 



Where sensitiveness, convenience of manipulation, and 

 accuracy are concerned, it is the individual machine, and 

 especially the condition of this machine, which must be 

 looked to rather than the type. If the knife edges them- 

 selves are in perfect order, the knife-edge distances and the 

 weights correct, and the balance neutral, one type is pretty 

 much as good as another ; and under these conditions the 

 sensitiveness and accuracy of all are in excess of practical 

 requirements. 



In conclusion, the writer, without in any way wishing 

 to compare them with other machines, whose high merits he 

 fully appreciates, would like here to express his admira- 

 tion, alter a considerable experience of three individual 

 machines of this type, for the alt-round excellence of the 

 100-ton vertical testing machines, designed by Mr. Hartley 

 Wicksteed and made by Messrs. Buckton, of Leeds. 



