Rare! Vintage Lamp Device Made in USSR Oscilloscope/Oscillograf Original! LO-70.A rare lamp device in working order for radio amateurs and radio professionals.   Graduated from 1967, Saratov Electrical Instrument Plant named after Ordzhenikidze.  Tube oscilloscope.  Size: Length-10.6;  Height-6.7;  Width - 4.3 inches;  Weight - 8.66 lbs.   The oscilloscope is designed to monitor and control the forms of electrical oscillations, as well as for tuning amplifiers and low-frequency generators, troubleshooting TVs and radios.   BRIEF INSTRUCTIONS!  On the front panel of the device there are: 1) Beam change brightness control;  2) Regulator of the beam movement on the device;  3) Vertical signal gain control;  4) Input jack for connecting the studied low-frequency signal;  5) Sweep frequency regulator smoothly;  6) Frequency range switch;  7) Socket for connecting a separate signal that synchronizes the sweep;  8) Synchronization adjustment knob;  9) The regulator of the movement of the beam horizontally;  10) Focus control;