RAI LWAV PL. ZS.
Details of Hollers and- Outside Rim
Fiej.3.
Fia. 4.
Fia. S .
Fia.l.
Fi/j. 9
.Details of Friction Rollers
Flan shewiiw the. method of fioci?w Boiler Flutes uirh T iroti fill size
J.W.Zcwrv fe.
London..John Weals Jit Hiah Holbein .2361.