Scruple (unit)
The scruple is a small unit in the apothecaries' system, derived from the old Roman scrupulum unit.
Mass unit
The scruple is of an ounce, dram, or 20 grains: it is therefore exactly 1.2959782 grams.The Roman scruple was 11.875% smaller, therefore being exactly 1.14208078875 grams.
Volume unit
The fluid scruple is fluid ounce, fluid dram, 20 minims, teaspoon, or 1 saltspoon.It is therefore equal to 1.2322304 milliliters in the US customary system, or 1.1838776 milliliters in the imperial customary system.