Check the listing for details. ESI Electro Scientific Industries SR1-10 Standard Resistor 10Ω. Condition: Used. Listed at 99.00 USD. ESI Electro Scientific Industries SR1-10 Standard Resistor Versatile working standard50 ppm long-term accuracy forAccurate, stable, low cost Binding posts add 0.1 to 0.2mΩ resistance value; banana plugs add 2 to 3mΩ additional resistance10ppm calibration accuracy5ppm/°C temperature coefficient The Model SR1 Standard Resistor is a laboratory standard of high accuracy and stability. The resistance of most values is initially adjusted to an accuracy of 20 ppm of nominal, with long term accuracy guaranteed to better than 50 ppm. Model SR1 has been constructed to meet today's high standards of performance. The resistance wire used is a modern alloy having excellent stability, extremely low temperature coefficient over a wide range of temperatures, and very low thermal emf to copper. A unifilar winding on a flat mica card is used to minimize both series inductance and shunt capacitance. The durable aluminum case provides electrostatic shielding. Gold-plated terminals reduce connection errors. The item is in good condition, tested and working.