| 摘要 |
<p>Device for universal quality testing of exposure material, especially technical or X-ray film. Device combines a sensitometer and a densitometer. The densitometer is configured as a swinging measurement arm that is swung into position to make a measurement on an area of large film. The densitometer includes an automatic measurement strip. The sensitometer is configured as a flat surface luminescent layer which can be excited to emit various colors, gray, yellow, blue and white, with different alternating fields in the range of 50 Hz to 10 kHz with an alternating voltage of 10 to 250 volts.</p> |
