. Scientific American Volume 75 Number 17 (October 1896) . Water EmeryTool Grinder Has no pumps, no valves. Nopiping required to supply it withwater. Always ready for uae. Sim-pleat in conatruction, moat efficientin operation. t^ Send for catalogue and prices- W. F. & JNO. BARNES CO. 1999 Ruby St., Rockford, Phyaical and School Apparatua THE THERMOPHONE A new inatrument for Measuring Temperatures Will take temperature of any-thing at any range or Circular free. d. S. RITCHIE & SONS, BROOKLINE. MASS. Transits and Leveling Instruments. gLkVEb POCKET LEVELS Sizea, 2}4 and 3K inc
. Scientific American Volume 75 Number 17 (October 1896) . Water EmeryTool Grinder Has no pumps, no valves. Nopiping required to supply it withwater. Always ready for uae. Sim-pleat in conatruction, moat efficientin operation. t^ Send for catalogue and prices- W. F. & JNO. BARNES CO. 1999 Ruby St., Rockford, Phyaical and School Apparatua THE THERMOPHONE A new inatrument for Measuring Temperatures Will take temperature of any-thing at any range or Circular free. d. S. RITCHIE & SONS, BROOKLINE. MASS. Transits and Leveling Instruments. gLkVEb POCKET LEVELS Sizea, 2}4 and 3K inchea. Pricea, 40 and 50 centa. For Book on the Level. C. F. RICHARDSOX & SON, P. O. Box 977, ATHOL, MASS., U. S. A. MONITOR
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectvitalst, bookyear1896
