YOU SAID:
I have a telescope with a 150mm aperture
INTO JAPANESE
口径150mmの望遠鏡を持っています
BACK INTO ENGLISH
I have a telescope with a diameter of 150mm.
INTO JAPANESE
直径150mmの望遠鏡を持っています。
BACK INTO ENGLISH
I have a telescope with a diameter of 150mm.
You should move to Japan!