phototimer मीनिंग इन हिंदी

उदाहरण वाक्य

1. The Phototimer was the first automatic timing device to be used in competitive sports.
2. In 1948 Bulova began developing the Phototimer, a unique combination of photo-finish camera and precision electronic timing instrument.
3. Two of his inventions, an X-ray film-viewer and an automatic film exposure instrument, the phototimer, are still widely used in radiology.
4. A habitual tinkerer, he caught the attention of the medical profession in 1942 when he introduced a phototimer that automatically calculates optimal X-ray exposure for a high-quality diagnostic image.