This was Johann Bessler's (aka Orffyreus) first publication designed to promote his gravity wheel in 1715. The book is in the original German with a full English translation.
- ISBN10 141168205X
- ISBN13 9781411682054
- Publish Date 18 May 2006
- Publish Status Active
- Publish Country US
- Imprint Lulu.com
- Format Paperback
- Pages 69
- Language English