- The auger in its perfected form- fine steel, perfectly machined, and highly finished- contrasted with an auger of earlier vintage will clearly show the advance from forge to factory, but will indicate little new in its method of use or its intended purpose. - "Woodworking Tools 1600-1900", Peter C. Welsh.
- The lower surface of the flywheel had been machined so as to form a friction disc, with a one- quarter inch depression 3 inches in diameter turned in the center. - "The 1893 Duryea Automobile In the Museum of History and Technology", Don H. Berkebile.
- For the first ones, though cleverly fashioned and machined, were of iron, rusted red with the ages; while this one that was before him now was paneled and decorated with sweeping scrolls. - "The Finding of Haldgren", Charles Willard Diffin.