Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Gauge
Flow meter used for testing breathing apparatus as well as for measuring air/gas flow behind a 'stopping' underground.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.
Amgueddfa Cymru
Flow meter used for testing breathing apparatus as well as for measuring air/gas flow behind a 'stopping' underground.