The usual custom when you use a ratio like 1:1 or 2:1 is to use the same unit of measure for both species unless the units are explicitly defined. And most especially not to mix units of volume, weight, molar concentration up. 1lb to 1lb, 1 pint to 1 pint, &c. I have never in the chemical literature seen anyone use 1:1 to mean 1 drachma to 1 hectare or 1 cup to 1 lb &c. It just becomes impossibly confusing if you do that.
Yours,
xperiment (research chemist)