Engineering reminiscences contributed to "Power" and "American machinist" (1908)
Porter, Charles T. (Charles Talbot), 1826-1910 · New York, J. Wiley · leaf 303
to … Surface Plate for Producing a True Plane. I will first describe the tool used in scraping. Originally thiswas a hooked tool, and the scraping was done by a drawing motion.Two of these tools were employed, one for the roughing work, in PRODUCTION OF ORIGINAL SURFACE PLATE 235 which the hook…
