絶縁 ぜつえん抵抗 ていこう けいじゃなかったです
zetsuenteikōkeijanakattadesu

Noun
Desu Copula

The polite, past negative form of 絶縁抵抗計

1. Wasn't an insulation resistance tester.; Wasn't a megohmmeter.

Past/Perfective
Negative
Polite
Casual Register