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
White slide rule, with engraved numerals, consisting of body, slide and indicator; used for mulitplication, squares and roots, and logarithms etc.; complete with instruction leaflet; contained in clear plastic case.
