Synonyms for periscope
EXAMPLES FROM THE WEB FOR PERISCOPE
The conning-tower and periscope are placed on the upper deck, as shown.
I was glad when I picked up its homely white front in my periscope.
The captain turns the periscope around, scanning the waters.
He looked neither to right nor left but was still at the periscope.
This periscope was not in use and had not been above the surface.
De Hooch went over to the periscope and put his eyes to the binoculars.
There was one who called it a dull watch when he did not see at least one periscope.
In sticking out the periscope, lookouts on ships are likely to see it.
He had never seen a periscope in his life, but he had read about periscopes.
The deck officer had not once taken the glasses off the periscope.