Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 533
corners at a single operation. Drilling asquare hole through a one-inch piece of marbleby the usual methods takes four hours or moreof careful work by a skilled man. By the newinvention it can be, and has been, done in fiveminutes. And yet the square auger is a simple ma-chine with only a dozen… … THE NEW AUGEB Tin; .M CIOR I.N rOSITKlX AM) II()I,i:s ol- V.VmOUS SHAlE.iliOKlil) KV IT the cutters, it is possible on the same principleto make the auger bore holes of almost anyimaginable shape, key-holes for doors, ovals,many-sided and irregular holes. Its field ofusefulness is bound to be a…
Children's literature
Internet Archive · UNC Libraries · Public Domain Mark 1.0. Free to use for anything.
![An illustration from St. Nicholas [serial], 1873, leaf 533](https://img.insideoutlibrary.com/img/1024/ia-stnicholasserial4621dodg-533-691.webp)
