Reference for Menachot 175:2

אמרו לו חצי לוג היתה שם ואפשר לשער בחצי לוג

But there was an additional measure there of a log and a half, by which one used to measure [the oil] for the griddle-cakes of the High Priest, a log and a half in the morning and a log and a half towards evening.

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