Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Graph
Chance-Pilkington
(publisher)
Wall chart and graph showing refractive indices and "V" values of lenses
Pwnc
Diwydiant
Rhif yr Eitem
91.21I
Historical Associations
Associated Person/Body: Chance-Pilkington
Association Type: Company name
Creu/Cynhyrchu
Derbyniad
collected officially, 1991
Mesuriadau
Meithder
(mm): 762
Lled
(mm): 1219
Deunydd
tecstil
pren
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.