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New 4th edition with 864 pages of information for craftsmen, students, teachers, engineers, do-it yourselfers and travellers. Packed full of tables, maps, formulas, constants and conversions. A concise guide covering chemistry, physics, electrical, electronic formulas, math, metric conversion, mechanical data, hardware, mapping, worldwide area codes, tools, currency, metals, weights, perpetual calendar, science and much more!
|Dimensions||5.3125 x 3.125 x 1 in|