Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Letter
Letter from C.H. Watkins to the Director of Scientific Research at the Admiralty. Dated 18th February 1932. Covering letter for specification - Watkins' Submarine Detection Device.
Pwnc
Diwydiant
Rhif yr Eitem
2001.142/14
Derbyniad
Donation, 22/8/2001
Mesuriadau
Meithder
(mm): 330
Lled
(mm): 203
Techneg
typed
Deunydd
papur
Lleoliad
In store
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.