Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Graph
Printed in black ink with handwritten details. Sixteen circular graphs - 'Simmance's Deadbeat Recorder'. Dates given on the graphs are for January 1935. Loose within a green card file with all other documents with accession number 83.184I/67. The file is labelled 'Colliery Boiler Plant B31', 'Cefn Coed Data' and 'Colliery Engineering'.
Pwnc
Diwydiant
Rhif yr Eitem
83.184I/67 (8)
Mesuriadau
diameter
(mm): 205
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.