Dose rate meters (roentgenometers) DP-5A, DP-5B and DP-5V.

Dosimeters, radiometers, roentgenometers and other similar devices.Dose rate meters (X-ray meters) DP-5A, DP-5B and DP-5V have been produced since 1964 and are an upgrade of the DP-5 model. All devices are dosimetric devices for measuring radiation levels (radiation dose rate) and radioactive contamination of objects by gamma radiation. All technical characteristics and differences of devices from each other are widely described on the Internet. The authorship of the photographs of the devices is noted on them, at the bottom left.