Richards PR Series Horizontal Borer Manual
Richards (Kearns) PR Series Horizontal Boring and Facing Machine. Manual of Instruction. This was issued together with, and intended to be used alongside, a very detailed Technical Sales, Specification, and Accessories Catalog.
Richards PR "Tools and Equipment"
Richards (George Richards) PR Horizontal Boring and Facing Machine "Tools and Equipment".
LIECHTI P, PR & PRT Production and Capstan Lathes. Two Catalogues.
LIECHTI "Universal" Lathes Type P Centre lathe, Type PR Turret Lathe and the Type PRT Drum-turret Lathe. Two detailed Sales & Technical Specification Catalogues. 20 pages.
Eseway Hardness Testers Types R, PR, PRB, ER, ELR, ERW, ELRW, ERBW and ELRBW Operation Manual
Eseway Hardness Testers Models: Types R, PR, PRB, ER, ELR, ERW, ELRW, ERBW and ELRBW. Operating Instructions with Hardness Scales and Brinell Conversion Charts.
Liechti P, PR, PRT Manual
Liechti Lathes (Switzerland ). "Description and Working Instructions" with detailed Sectional Drawings of the "Universal" Lathes Type P Centre lathe, Type PR Turret Lathe, Type PRT Drum-turret Lathe.