. Scientific American Volume 85 Number 06 (August 1901) . IDEAL MFG. IF YOU SHOOT A RIFLE Pistol or Shotgun, youll make a BullsEye by sending three 2c. stamps forthe Ideal Hand-book A, l2tf padresFREE. The latest Encyclopedia ofArms, Powders, Sh»t and Bullets. Men-tion Scientific American. AddressCO., New Havex, Conn., U. S. A. SENSITIVE LABORATORY BALANCE. By N. Monroe Hopkins. This built-up laboratorybalance will weigh up to one pound and wilt turn with aquarter of a postage stamp. The balance can be madeby any amateur skilled in the u^e of tools, aud it willwork as well as a $125 balance. T
. Scientific American Volume 85 Number 06 (August 1901) . IDEAL MFG. IF YOU SHOOT A RIFLE Pistol or Shotgun, youll make a BullsEye by sending three 2c. stamps forthe Ideal Hand-book A, l2tf padresFREE. The latest Encyclopedia ofArms, Powders, Sh»t and Bullets. Men-tion Scientific American. AddressCO., New Havex, Conn., U. S. A. SENSITIVE LABORATORY BALANCE. By N. Monroe Hopkins. This built-up laboratorybalance will weigh up to one pound and wilt turn with aquarter of a postage stamp. The balance can be madeby any amateur skilled in the u^e of tools, aud it willwork as well as a $125 balance. The article is accom-panied hy detailed working drawings showing variousstages of the work. This article is contained in Scien-tific American Supplement, No. 1184. Price 10cents. For sale by Mtrxx & Co., 361 Broadway, NewYork City, or any bookseller or newsdealer. im; >i:\v itcivioi 4 01 vn:ic. Registers an accurate account of work done on print-ing presses, grain tallies, weighing, measuring andother automatic machines. CouDts up to 1,000 000 andrepeats automatically. Simple, accurate, durable. Spe-cia counters to order, jy Send for circular. C. J. ROOT, Bristol, U. S. A.
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Keywords: ., boo, bookcentury1900, bookdecade1900, booksubjectair, bookyear1901
