rward a limited distance by the handle pearance of a sooty deposit on the inside of the glass. The swiveled to the end of the drill spindle. The size of the flask which contained the carbon pencil and its platinum Of course an index plate maybe purchased, but the money drill will be governed… … the block and used as before. ation with tannin till aided by vapor of carbonate of ammo- I IND£X PLATES FOB GEAR CUTTING. After completing these rows of holes the drill is irioved to nia, when the usual purple color of ferric tannate was de- the space between the first and second rows, the block…
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