Description: Package deal of new, high quality reproductions of3 different instruction manualsfor the Curta calculator Type I and Type II in English languagewhich were originally published by Contina Ltd, VaduzThe instructions and exercises herein apply to both Curta models.The two models differ only in the number of figures, which they can handle.The original editions are out of print since many years.They are very hard to find and purchase.The purpose of these manuals is to show you how to make the best use of your Curta. This package deal includes following 3 manuals: (1) Instructions for use of the CURTA 46 page booklet It measures approx. 145 by 105 millimetres (6" x 4") in size and contains description and handling of the curta, the four arithmetical operations, some practical applications. (2) Your CURTA Calculatordouble-sided 20 page fold-out manual It measures approx. (complete open) 20.5 x 11.6 inch (518 x 295 mm) and contains step by step instructions with illustrations. (3) Computing Examples for the CURTA 51 page booklet, It measures approx. 145 by 105 millimetres (6" x 4") in size, complete both manuals listed here before and contains following computing examples Division by breaking down (subtractive method)Division by multiplying by a reciprocalThe rule of threeThe rule of three in a single calculation (only CURTA Model II) .Extended rule of threeCalculation of rootsContinued mulfiplcation aXbXcXd...etc.Cubes without intermediate notes Commerce and IndustryChecking of invoices and goodsPercentage calculationsA) Percentage increaseB) Percentage decreaseC) Profit marginD) Compound percentagesE) Profit and lossF) Capital and interest CostingCosling wilh simultaneous control (only CURTA Type II)Calculafions with nines transferExchange calculalionsCalculations with English currency StatisticsSimuilaneous accumulation of a sum and a sum of squares (only Curta type II)Compuiation of arithmetic mean and standard deviation Technical and Survey calculalionsDivision into a negative number (complementary number)Calculation of co-ordinatesDetermination of the amount of silver in an alloy (only CURTA Model II)Determination of the angles in an acute-angled triengie, given three sides (only CURTA Model II)Determinaton of a side of an obtuse-angled triangle (given the two other sides and their included angleCalculation of area from co-ordinatesCalculation of the distance between two poinis, given their co-ordinates (using Pythagoras' theorem)Calculation of distance and azimuih (only CURTA Model II)Linear interpolation Worldwide shipping by registered mail .
Price: 65 USD
Location: Hamburg
End Time: 2024-11-07T23:51:35.000Z
Shipping Cost: 8 USD
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All returns accepted: ReturnsNotAccepted
Country/Region of Manufacture: Germany
