SR1010 Resistance transfer standard. Values 1Ω, 10Ω, 100Ω/step, 1 KΩ, 10 KΩ  and 100 KΩ/step.
SR1010 Resistance transfer standard consists of 12 equal resistance steps. These steps are available in increments of 1 ohm (SR1010-1), 10 ohms (SR1010-10), 100 ohms (SR1010-100), 1kohm (SR1010-1k),
10kohms (SR1010-10k) and 100kohms (SR1010-100k). The Model SR1010 provides four-terminal connections for each step or for series and parallel combinations of these resistance steps using the optional Series-Parallel (SPC102), Parallel Compensation Networks (PC101) and shorting bars (SB103). This improves power dissipation, stability and errors due to variance in temperature.

• Initial Accuracy... ± 20PPM of nominal value matched within 10PPM

• Transfer Accuracy... ± (1PPM + 0.1µΩ
  at parallel value) for 100:1

• Transfer Accuracy... ± (1PPM + 1µΩ
  at series parallel value) for 10:1

• Long Term Accuracy... ± 50PPM of nominal value

• Calibration Accuracy... ± 10PPM

• 1 year warranty

APPLICATIONS:
Calibration of Working Standards and Precision Resistance Measuring Systems
Reference Voltage Divider
Used to transfer NIST traceability to different values of Resistance