Scientific American Volume 77 Number 07 (August 1897) . Standara |y Price List on application toWALWORTH MFG. 20 Oliver St., BOSTON, MASS. QUEEN ARCHITECT LEVEL $50 mproved Transits & LeveisGraduated entirely on ourlarge dividing engines. Spe-cial award at the WorldsFair. All kinds of Engineer-ing, Surveying and DraftingInstnunentB and p. illustrated cataloguemailed &ee only If this (& CO., Inc.,lull Chestnut tit., Transits and Leveling Instruments. JIKKIb ELECTRIC LEVELS

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