115 volts, approxi- head to outer end of table, of 788 feet; from head to in diameter mounted in a suitable holder, which is mately 90 per cent; and this efficiency tends to in- outer gate sill of 750 feet; and the length on floor, from crease aS the current falls off. The apparatus is de entirely… … THE NEW GRANITE DRYDOCK, BOSTON NAVY YARD.
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