This Vintage 1960 Dennison Ready Reckoner Indexed Commercial Calculator Is In Very Good Condition. This Compact Vest Pocket Version Was Published By The Ottenheimer Inc. In Baltimore, Maryland. This Was Before We Carried Calculators and Phones. The New Decimal Reckoning Table Was For Finding At A Glance The Value Of All Articles Sold By The Piece, Pound, Yard, Dozen, And Hundredweight. One Of Over Twenty Compact Reference Series Books You Could Carry In Your Pocket. This Copy Has Been On A Book Shelf For 64 Years. Book Cover Collected Dust And The Inside Pages Have Turned Brown From Age. Other Then That The Dust Cover And Book Are In Very Good Condition. Cost $1.00 See Pictures. Very Rare! #8052
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