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CV231 tubular neon indicator

This valve measures 205x15mm overall

This is a tubular neon indicator. The EVS sheet indicates it is based on RCA Stock No. 19128, and also has an RAF reference 110E/61.

Striking voltage145-210V

The EVS sheet indicates that there should be a shield fitted to the centre and about 30mm in length, slightly more than half cylindrical in shape.