Re: Brunsviga mechanical calculator

From: andrea
Email: a.celli@infinito.it


Value? Look at german ebay. It's quite common http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=6514668294&ssPageName=STRK:MEWA:IT How does it work? To add: set number and rotate crank To subtrack: set number and rotate crank in reverse sense. To multiply: add many times. Eg. 1243*32 set 1234 and rotate twice, shift result's carriage and rotate 3 times the crank To divide: many subtractions You can find a virtual working model of a similar machine at http://www.rechnerlexikon.de/en/upload/7/7b/Feliks.swf Andrea