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1. Vintage Calculators

   learn about all kinds of old calculators and see the progression from mechanical to electronic models.

   http://www.vintagecalculators.com/...

2. Temperature Conversion Calculator

   Kelvin, Fahrenheit or Celsius; you pick the units.

   http://chemistry.berkeley.edu/links/temperature.html...

3. Speed of Sound Calculator

   try this program that lets you find out how fast sound travels.

   http://www.measure.demon.co.uk/Acoustics_Software/speed.html...

4. Density Calculator

   convert density into different units of measurement.

   http://www.aip.org/avsguide/refguide/density.html...

5. To Make a Pocket Calculator

   To Make a Pocket Home > To make a Pocket Stay on this page for the story of the development of electronics, which led from heavyweight desktop m

   http://www.vintagecalculators.com/html/to_make_a_pocket_calculator.html...

6. Hand held Calculators

   Hand held Home > Hand-held Featured Electronic Hand-held : As can be seen by studying the Featured Desktop Electronic section , through the 1960

   http://www.vintagecalculators.com/html/hand-held_calculators.html...

7. Calculator List P-S

   List P-S Home > Photo Library Book Addendum "P–R" New for The Collector's Guide to Pocket The Collector's Guide to Pocket

   http://www.vintagecalculators.com/html/calculator_book_addendum_p-r.html...

8. Desktop Calculator Photograph Library

   Desktop Photograph Library Home > Photo Library Desktop Electronic Photographic Library This page has links to photographs of vintage desktop el

   http://www.vintagecalculators.com/html/desktop_calculator_photo_libra.html...

9. Mechanical Calculator Photograph Library

   Mechanical Photograph Library Home > Photo Library Mechanical Photographic Library This page has links to photographs of vintage mechanical on

   http://www.vintagecalculators.com/html/mechanical_calculator_photos.html...

10. British Calculators

    British Home > British British Vintage British names appear on many vintage . Some are manufacturers, some are marketing companies selling other

    http://www.vintagecalculators.com/html/british_calculators.html...