a. Screw-Gag-e. Fitr. 220. Screw- and Wire-Gages. b. Wire-Gag-e. c Twist Drill-Gag-c. using a piece of 1 gas pipe as a truing tool held against the stonewhen run dry. Power grindstones usually have truing devices attachedto them. Fig. 221. A common form is a hardened steel screw, thethread of…
Woodwork
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