Instruction book No. 512/2 for type D.P.Y, Non-Reversible and type D.P.Y.R. Reversible hydraulic dynamometer. Includes diagrams, working instructions and general care and maintenance advice. Leaflet: 'Engine Testing with the Froude Hydraulic Dynamometer'
Promotional leaflet No. 1008/2 produced by Heenan & Froude concerning the P. Type water coolers. Gives information on the specification including diagrams and images of typical applications. Pull out section listing many purchasers and users of the Water Coolers across the world. Leaflet: 'Heenan Water Coolers'
