A DIGGING MACHINE TO DEEPEN CHANNELS ETC. AN IMPROVED RECORDING THERMOMETER. A COMBINED RUBBER STAMP VULCANIZER AND PRESS. BENTINCK & RENNER'S DIGGING MACHINE. THE 'NEW YORK' RUBBER STAMP VULCANIZER AND MATRIX PRESS. THE 0 RAPER MFG CO. 152 FRONT ST. INSTRUMENT COMPLETE. DIAGRAM SHOWING PARTS. DRAPER'S RECORDING THERMOMETER, scientific american, 1893-12-09
A DIGGING MACHINE TO DEEPEN CHANNELS ETC. AN IMPROVED RECORDING THERMOMETER. A COMBINED RUBBER STAMP VULCANIZER AND PRESS. BENTINCK & RENNER'S DIGGING MACHINE. THE 'NEW YORK' RUBBER STAMP VULCANIZER AND MATRIX PRESS. THE 0 RAPER MFG CO. 152 FRONT ST. INSTRUMENT COMPLETE. DIAGRAM SHOWING PARTS. DRAPER'S RECORDING THERMOMETER, scientific american, 1893-12-09
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