Acoustics Equipment, marked NR15A. The box reads as follows:“The Pattern number shewn on this slip is the new designation of the Valve enclosed. Supplies should be taken on charge, and demanded, under the new pattern number in future. S.N.S.O. Haslemere December, 1943.”, (52-6296)

Details

Category:
Acoustics
Object Number:
1947-224/46
type:
acoustics equipment
credit:
Admiralty (Tactical & Staff Duties Division)