Scully blue book: catalogue of iron, steel, machinery, heavy hardware, tools and supplies, with valuable and accurate reference tables (1910)
Scully Steel & Iron Co. · Scully Steel & Iron Co. · leaf 215
REVERSIBLE PISTONAIR DRILL No. 25. For extra heavy drilling, reaming, tap-ping, flue rolling, and putting inflexible staybolts. NON-REVERSIBLE DRILLS. Made in a number of different sizes.