Figure 38. — Early igTH century: The mass-produced version of the wooden brace and bit toolc the form 

 illustrated in Book 87 of Cutler's Castle Hill Works. {Coiirlesv of the I'ictoria and Albert Museum.) 



Figure 39. — i8th century: The transitional form of the wooden brace and bit incorporated 

 the overall shape of the mass-produced version but retained the archaic method of fastening the 

 bit to the chuck. The tool is of Dutch origin and suggests the influence of Sheffield design on 

 European tools. (Smithsonian photo 49792-E.) 



206 



BULLETIN 24 1 : CONTRIBUTIONS FROM THE MUSEUM OF HISTORY AND TECHNOLOGY 



