plural of σ-finite measure

Alternative form of measure twice and cut once

(carpentry, literally) One should double-check one's measurements for accuracy before cutting a piece of wood; otherwise it may be necessary to cut again, wasting time and material.

(an expression of) the doctrine that all knowledge is subjective, being derived from observations made by humans, and there can be no objective truth

Alternative form of desperate times call for desperate measures

In adverse circumstances, actions that might have been rejected under other circumstances may become the best choice.

The quality of being measured.

In a measured fashion.