Hopkins, Henry, [from old catalog] comp · New York, H. Hopkins & co. · leaf 109
Rotner £ Co. 28 to 42 HER AVE., Newark, N. J. … HOPKINS HANDY NOTES AND QUERIES. Weight of Iron, Steel, Copper and Brass Plates. DIAMETER AND rHICKNESS DETERMINED BY AMERICAN GAISGE. V Weight op Plates per Square Foot. No. of Gauge. Size ofeach No. WroughtIron. Steel. Copper. Brass. Inch. Lbs. Lbs. Lbs. Lbs. 0000 .46000 17.25 17.48 20.838 19.688…
Metal-work · Hardware
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