What kind of device?

In the closet at work found incomprehensible meter. On the box was written "217 electronic measuring system." Anything found in intrnet - that it is designed to measure linear distance deviations. Everything was fine, as long as I have not included ...





Here he is in the off position. Pay attention to the warning lamp in the lower left corner.



With him in the kit are two of these things. When you turn on the device, these things begin to buzz ...



So ... I turned it on. And I was very alarmed by the warning lamp.



Zoom ... After the Soviet of radioactive devices, generators, etc. I'm a little nervous. Nobody faced with this device? Year 1973.



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