Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Grains of aqueous vapour per cu. ft. of air (chrt)
Blueprint of a chart. Chart showing grains of aqueous vapour per cubic ft of air. Chart from Guest, Keen & Nettlefolds Ltd, Cardiff. Dated 21st November, 1907.
Pwnc
Diwydiant
Rhif yr Eitem
86.129I/551
Mesuriadau
unfolded
(mm): 552
unfolded
(mm): 865
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.