| 其他書名 | Whereby a Person Unacquainted with Arithmetic May Find by Inspection the Exact Diameter of Wheels, Or Pinions for Any Number of Teeth and at All the Different Pitches from 1-5th to 1-20th Part of an Inch |
| 出版 | M. Wilson, 1817 |
| URL | http://books.google.com.hk/books?id=XFQIzQEACAAJ&hl=&source=gbs_api |