Studio Microphone STC Type 4021C
•SG Brown Headphones
Hunningscone patent Wall Telephone
•GPO Buzzer
Evershed and Vignoles
Generator
Sangamo Weston time switch
Admiralty loudspeaker
Marconi speaker
Ormond Moving iron loudspeaker
Richard Allan Radio loudspeaker
Whiteley Electrical Radio loudspeaker
Medresco Hearing aid
Regentone Battery Eliminator
Unknown Induction coil
AkaiLoudspeakers
Morse keys
Smiths Electric clock
Phoenix Microphone
PX20/234 No. 10
Interval timer
BSR Elizabethan tape recorder
FVRT100 power supply
Ericsson headphones
Bicycle lamp
Ariston organette
Grundig tape recorder
Fultograph picture receiver
Shure Microphone
model 488T
Test tool set
AN/USM-3A
Snelgrove Crystal Ovens
Aircraft instruments
AVO voltage converter
Type VC1
Mayer & Wolf
shock machine
Ormond
Loudspeaker
Medresco valve hearing aid
Bakelite
Loudspeaker
Bakelite
Loudspeaker
