Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Brown's Gas-Vaccum Engine, 1826, photo of diagram
Brown's Gas Vacuum Engine, 1826, reproduction from "Examples of Steam, Air and Gas Engines" by Brown, 1826 Photograph of a printed drawing.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.