Monroe Hopkins. This huilt-up lahoratorybalance will weigh up t« one pound antf will turn with a^uarterof a ptstagestamp. The balance can be madeby any amateur skilled in the use of tools, aiid it willwork as well as a $125 balance. The article is accom-panied by detailed working drawings showing… … 254 Scientific ^mencan. October 20, 1900. ^he
Carbide · Feet · Patents · Horse · Dock · Horse power · Apparatus · Wooden dry · Wireless telegraphy · Scientific American · Carbide industry · Dry dock · Acetylene gas · Color screen · Feet long · Large number
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