| Author: | Sperry Gyroscope Company |
| Subject: | VK, Gyro compass |
| Format: | Text |
| Date issued: | 2016 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | The Sperry Gyro-Compass [electronic resource] / Sperry Gyroscope Company |