Handy notes and queries. A manual of useful information of especial importance to dealers in hardware, stoves and tinware, machinists', gas-fitters' and plumbers' materials, as well as the various workers in useful metals .. (1889)
Hopkins, Henry, [from old catalog] comp · New York, H. Hopkins & co. · leaf 45
een the center point and theknife, requiring considerable forceto remove it, and involving muchdanger of cutting the fingers in do-ing so. It is only necessary to cutone washer with this cutter to beconvinced of its superiority. MANUFACTURED ONLY BY Gleason & Allen WASHER^CUTTER. GLEASONS PAT.… … TERRYVILLE, COM. HOPKINS HANDY NOTES AND QUERIES. ELECTRICAL CONDUCTIVITY OF METALS. The most reliable tests of electric conductivity of the metals are thoselately made by Mr. L. Weiller. They were conducted with a series of barsspecially prepared for the purpose. The measurements were taken byi…
Metal-work · Hardware
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