Alan, If you get the book you will be surprised as there are only one plan and elevation drawing of what is called "large horizontal engine". The drawings are not sized except two scales in inches. The rest looks like old style dwgs with the sizes in 1/8 , 1/16, 1/32 and 1/64. That's why I said it may need modifications and design improvements if we want some functionnal engine ! OMHO ! The book contains other " funny useful things" like pumps, boilers (check the design....) and what is called an hot air engine... PIerre pierre.courbouleix@xxxxxxxxxx This e-mail is intended for the adressee(s)only and may contain info that is the property of, and/or subject to a confidentiality agreement between the intended recipients.If you have received this e-mail in error, please contact the originator of this e-mail via e-mail and delete copies from your computer or network. Misuse of the content of this e-mail message may violate the Laws of your Country MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.