These cookies are absolutely essential for our website to function properly.
We use Google Analytics to measure how you use the website so we can improve it based on user needs.
These cookies may be set by third party websites and do things like measure how you view YouTube videos.
Amgueddfa Cymru – Museum Wales
Printed in black ink on off-white paper. A table from a paper on 'Air Compression, Transmission and Metering' by E.Ivor David in the Proceedings of the South Wales Institute of Engineers. Loose within beige/light brown card file containing information relating to the Powell Duffryn Ltd.
