We purchased this unit from a business liquidation sale. It was known and labeled good working. We had our in-house Electrical Technician inspect it and do some testing with it and says it sure seems to work properly. We are showing it powered up and we changed some modes also to show the led numbers changing as we tried different tests with it. It comes with the power cord and the GenRad 1657-9600 removable test leads(picture showing it being removed),we are not sure what other attachments can be installed in that area. We don't have an operating manual but that should be easily found and downloaded on-line. Being this is an electrical item we will guarantee it for 30 days so please use and test it right away. Here's some info we found for this type of unit.

     

GR / GenRad / QuadTech / IET 1658 Precision RLC Digibridge

Features and Overview:
  • Measures AC Resistance, Low Frequency Inductance and Capacitance and widely accepted impedance meter in a metrology environment
  • 0.02% Measurement Accuracy and +/- 0.0001 Df
  • Programmable Frequency 12 Hz - 100 kHz
  • 1658 has a built-in 4 terminal kelvin fixture for testing components
  • Measurement Parameters: C/D, L/Q, R/Q, or C/R (series or parallel)
  • Test Frequencies: Over 500 programmable test frequencies (12Hz to 100kHz) 0.01% Accuracy.
  • Applied Voltage: 5mV to 1.275V (programmable in 5mV steps).
  • Measurement Speed: Up to 19 measurements/second.
  • Accuracy: (Primary parameter) Basic RLC ±0.02%. (Secondary parameter) Basic DQ ±0.0001
  • The item is in good condition, tested and working.
  • The standard resistor, capacitor and inductor shown in the photos which demonstrate the unit are not included in this sale.
    • This unit includes banana test leads shown.
    • Shipping Weight (lbs.): 20