Measure Twice Because You Can Only Cut Once.
Quotations - Old
Measure twice because you can only cut once.
Measure twice, cut once.
Measure a thousand times and cut once. -- Turkish Proverb
Measure twice and saw once. -- Advice from an old carpente
Advice from an old carpenter: measure twice, saw once.
You can only live once, but if you do it right, once is enough.