The scruple ( ℈) is a small unit in the apothecaries' system, derived from the old Ancient Rome scrupulum () Roman units ( /).
The Roman scruple was 11.875% smaller, therefore being exactly 1.14208078875 grams.
It is therefore equal to 1.2322304 in the US customary system, or 1.1838776 milliliters in the imperial customary system (to eight significant figures).
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