
McVitie Weston valve collection, STC Micromesh valve, type S.G.A.1.
- Made:
- circa 1930

STC Micromesh valve, type S.G.A.1., (RMW/G139 - McVitie Weston number), by Standard Telephones and Cables Limited, c. 1930.
STC Micromesh valve, type S.G.A.1., (RMW/G139 - McVitie Weston number), by Standard Telephones and Cables Limited, c. 1930.