| 1 | The periscope bobbed up behind him. | |
| 2 | Now you can keep your boat at periscope depth all day long! | |
| 3 | I still need to find more pics of the thing with it's periscope. | |
| 4 | At periscope depth it can be located by the enemy's reconnaissance aircraft. | |
| 5 | A viewing instrument such as a periscope, microscope, or telescope. |
Copyright © Purple Culture Co., Ltd. 2001 - 2026. All right reserved.
