Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
The Prestwich Patent 'Protector' Lamp (leaflet)
Leaflet showing a lamp and six flames reacting to various percentages of firedamp.
Pwnc
Diwydiant
Rhif yr Eitem
2017.38/680
Mesuriadau
Meithder
(mm): 250
Lled
(mm): 105
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.