. Bulletin - United States National Museum. Science. 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 :
. Bulletin - United States National Museum. Science. 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. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
