American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 131
ation upon the long legs. So with a lathe mandrel of an inch in diame-ter ; if it has an eccentricity of one-tenth of aninch, the eye could at once detect it, and all theproducts of that lathe would have the game one-tenth eccentricity; but were the mandrel onlyone-tenth of an inch in diameter, the… … tion—tools and machines sufficiently exact tobe relied upon for producing the most delicatemodern horological instruments. For this purpose no simple machine is morein use than some form of lathe, and no machinehas had more need of improvement. For thelast hundred years everything in the way…
Clocks and watches
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten02unit-240-95.webp)
