hydroscope meaning in Hindi

Examples

1. A hydroscope is an optical device used for making observations deep under water.
2. Hypatia is given credit for inventing the hydrometer ( or hydroscope ) sometime in the late 4th century or early 5th century.
3. Despite common belief Hypatia did not invent the hydroscope, although others believe that Hypatia did help other inventors to build the instrument.
4. 4'In 402, Hypatia receives a letter from the ailing Synesius giving a brief description of what he calls a hydroscope.