McVitie Weston valve collection, BTH valve, type B.8
- Made:
- 1927
BTH valve, type B.8, heavily gettered, (RMW/C75 - McVitie Weston number), by British Thomson-Houston Company Limited, 1927.
BTH valve, type B.8, heavily gettered, (RMW/C75 - McVitie Weston number), by British Thomson-Houston Company Limited, 1927.