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
Bec 1 methanometer M&Q approval No.10 (class 1A). Serial No. '2054'. Black plastic box with small red button on top centre, front has metal plaque with title and makers name on and a clear plastic window at front top right to see gauge which is divided between O and S, black button on left side, back is held on by four screws, the holes of which are infilled with red wax, back also has two brass lined holes for screwing on of attachments.
