CURTA-Computing examples for the Curta Calculator (booklet in english language) For Sale

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CURTA-Computing examples for the Curta Calculator (booklet in english language):
$19.50

Computing Examples for the curtaThis is high quality reprint(near original look)
of the original 51 page booklet \"Computing Examples for the Curta\",
originally published by Contina Ltd, Vaduz, Liechtenstein.

These Computing Examples complete the little booklet \"instructions for use of the curta\" resp. the short instructions sheet \"Your curta calculator\", which have accompanied every curta machine.

Every example in this collection relates to both curta models, whith the exception of those, which are marked \"only Curta model II\". The two models differ only in the number of figures , which they can handle.

The booklet measures approximately 77 by 154 millimetres (6\" x 4\") in size.

The original booklet is out of print since many years.

It’s very hard to find and purchase.

• Division by breaking down (subtractive method)
• Division by multiplying by a reciprocal
• The rule of three
• The rule of three in a single calculation (only CURTA Model II) .
• Extended rule of three
• Calculation of roots
• Continued mulfiplcation aXbXcXd...etc.
• Cubes without intermediate notes

Commerce and Industry

• Checking of invoices and goods
• Percentage calculations

A) Percentage increase

B)Percentage decrease

C)Profit margin

D)Compound percentages

E)Profit and loss

F)Capital and wilh simultaneous control (only CURTA Type II)

Technical and Survey calculalions

• Division into a negative number (complementary number)
• Calculation of co-ordinates
• Determination 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 angle
• Calculation of area from co-ordinates
• Calculation of the distance between two poinis, given their co-ordinates (using Pythagoras\' theorem)
• Calculation of distance and azimuih (only CURTA Model II)
• Linear interpolation