x1 (agent) count-measures/evaluates x2=m2 [quantity] as x3=k3=m3 [number counted] items/units of/in/pertaining to set x4=k2, on scale x5=m4 (si'o; default: from 0 representing nothing/no instances of the item, and by (units of) 1 for each additional occurrence if the item is quantized) with accuracy x6=m5 (ideally should be exact/perfect). x2 is countably measurable.
The scale sets the "counting [off] by units" and most countable things are counted from "0" (meaning nothing/no instances of the item in question) with each additional occurrence of the (quantized) item being represented by an addition "1". See: kamre, zilkacmre.