Diagram of the Lanchester speaker

Diagram of the Lanchester speaker
Diagram of the Lanchester speaker "Sp.Sen" (rolling ring centering)

Image Details

Title Diagram of the Lanchester speaker
Archive Reference LAN/2/15/1
Description Diagram of the Lanchester speaker "Sp.Sen" (rolling ring centering)
Creator Unknown
Copyright Unknown
Date of Creation c.1910
Media Lantern slide
Dimensions N/A