Record

Document Reference	PPM/15/40/1-20
Title	35 mm slides from a single hanging slide storage sheet labelled 'Acoustic Control (1996) AC (1-20) + AC8 51+52 AC12 51 + AC18 51'; 1996
Date	1996
Extent	20 slides
Level	SubSeries
Access Conditions	Access is restricted under current Data Protection legislation. Also, access to the original slides is restricted for preservation reasons; readers are expected to use surrogate digital images. Please see our Access Policy or contact us for further advice.
Content Description	Slides include magnetic field diagrams; drawings of coils and magnets, including some showing acoustic screens; and circuit diagrams.