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File:Surface-grinding-wheel-markings.jpg (view source)
Revision as of 18:05, 6 August 2018
, 18:05, 6 August 2018from US Army training circular no. 9-524, "Fundamentals of Machine Tools"; fig. 5-9, p 5-8; public domain
from US Army training circular no. 9-524, "Fundamentals of Machine Tools"; fig. 5-9, p 5-8; public domain