This cathode ray tube type 902 (2 inch diameter) may have been used in a development project but not used in the CSIRAC console, which used 3 inch diameter tubes. The 'Sydney' CSIRAC was significantly different from the 'Melbourne' CSIRAC; there was, for example, a development project that started in Sydney just before the move to Melbourne and was completed after CSIRAC had been set up in Melbourne. A label accompanies this item.

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