Slip the spider on the armature shaft and secure it solidly with the setscrew so that the shaft will not turn in the spider when truing up the armature core. [Please select]
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--Devices for truing up grindstones are now made, and the illustration (Fig.) [Please select]
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The form is taken down by simply unscrewing the turnbuckles; it can be erected by common labor in charge of one carpenter to attend to the plumbing and truing-up. [Please select]
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