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- catalog contributor b8051362.
- catalog created "1905.".
- catalog date "1905".
- catalog date "1905.".
- catalog dateCopyrighted "1905.".
- catalog extent "[8] p.".
- catalog issued "1905".
- catalog issued "1905.".
- catalog language "eng".
- catalog publisher "Philadelphia, James G. Biddle,".
- catalog subject "Electric meters.".
- catalog title "Roentgen ammeter for X-ray tubes ... The only instrument which accurately measures the effective current that passes through an X-ray tube. Also, it detects the presence of "inverse" current, and indicates the rise or fall in vacuum of a tube. "The value of this instrument as a basis for comparing technique in radiotherapy cannot be overestimated. Its invention makes a marked advance in treatment possible."".
- catalog type "text".