He used opera-glasses before.

Use your opera glasses, Dorothy.

Can I borrow your opera glasses?

They've all got those little opera glasses.

May I borrow your opera glasses, please?

Beth, where in tarnation are Marmee's opera glasses?

We found them on the opera glasses in his office.

Before he left he showed me your window and gave me his opera glasses.

I was looking with an opera glass to see which citizen it was with the president.