Standard

Brand on Tube Standard
Extended Brand Name Standard Radiofabrik (SRF)


Country Sweden
City Ulvsunda, Stockholm, Sweden
Year 1948
Tip Shape Round Tip
Glass Color Clear Glass
Mica Triple Mica
Getter D-D Double Getter
Plate Color Black
Pin Color Silver
Base Dark Brown
Notes

They where mainly used in the aiming device for Haubitz cannons and Bofors (Swedish military supplier) was their main client. The tube was produced very sturdily to withstand the shock from the cannon blast and therefore has five support rods and triple micas to support the inner structure. Dark brown base, muddy black plates, double D-getters and marked with white ink factory production code on the anodes; RH2050 & RH2060.

Standard 33S30B
Standard 33S30B
Standard 33S30B
Standard 33S30B
Standard 33S30B
Standard 33S30B
Standard 33S30B
Standard 33S30B
Standard 33S30B
Standard 33S30B
Standard 33S30B
Standard 33S30B
Standard 33S30B

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