ガリレイ しき望遠 ぼうえん きょうでしょう
gari reishikibōenkyōdeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of ガリレイ式望遠鏡

1. Galilean telescope, probably.; It's likely a Galilean telescope.

Polite
Presumptive
Conjecture