This is a used HP Hewlett Packard model 1740A Oscilloscope, serial number 2306A 2 1 719.  This unit has been in storage for many years.  It was powered up, and dual traces were generated on the screen.  Various buttons were activated to modify the traces, and all knobs that were operational without probes seemed to work properly.  Two of the rubber feet on the back of the unit are broken off, so it does not stand on end very well - it would be best to use this unit horizontally.  This auction only includes the oscilloscope and a power cord.  No other items such as manuals, probes, multimeters, or other similar items are included.  This unit is guaranteed to work if missing items such as probes are added to the unit.