スライドルールであれば
suraidorūrudeareba
1. If the slide rule…; When the slide rule…
Noun
1. If the slide rule…; When the slide rule…
1. rule
1. by rule; according to rules
1. If the rule…; When the rule…
1. It wasn't a rule.; It wasn't the rule.
1. Is not a rule.; It is not a rule.
1. It was a rule.
1. If the rule; When the rule