the gowpen

{{name}}'s measure

how much

of what

your gowpen, mL

cup both hands under a tap, little fingers touching, then pour into a measuring jug. enter what you got. the hand rows and the gowpen unit follow your hands; everything is remembered on this device.

—

the volumes below are to the gowpen's precision — which is "my hands, probably." pre-metric units varied by town, century, and whether the assize officer had been bribed. the figures here are the standard-ish values from the Encyclopædia Britannica's 1911 edition, the Scottish Weights & Measures Act of 1707, the Biblical values used in the Mishnah, and the Shaku-based Japanese system of 1891. tweak as needed; your gowpen is yours.