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Picture
Manufacturer:    General Radio Company (USA)
Model:                    687-A, S#112
Vintage:                 1935
Purpose:                General Purpose
Condition:            Rebuilt



Comments:
This 687-A was completely modified inside and the outside was riddled with extra holes and tape. I decided to gut it completely and mount a "modern" scope circuit inside. Now it can be used as a monitor scope at least. Therefore the inside is not worth any pictures. I tried to rebuild the outside as much as possible.
Only because it is such a rare and historically important unit, I spent so much time on it and post at least a few pictures of it. 

Documentation:
gr_687-a_ad1935.jpg
File Size: 476 kb
File Type: jpg
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