Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Letter from the Mines Department to E.I. David
Letter of advice from J.M Horsely (H.M. Inspector of Mines) to E. Ivor David (consultant engineer), concerning slip ring induction motors and flameproof enclosures. On cream coloured Mines Department headed paper, typed in black ink. Dated 2nd March, 1931. Attached to 83.184I/25 (5) with a staple.
Pwnc
Diwydiant
Rhif yr Eitem
83.184I/25 (4)
Derbyniad
Collected officially, 20/12/1983
Mesuriadau
Meithder
(mm): 246
Lled
(mm): 191
Deunydd
papur
Lleoliad
In store
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.