RTD Simulators
PartsImage RTD-100, RTD-100X
The RTD-100X provides an absolute accuracy of +/-0.005% over its entire resistance range. There is no need to calculate or compensate for the error contribution due to contact resistance or "0" resistance because there is no "0" resistance.  
PartsImage RTD-200
The most modestly priced of the "shunt decade design" instruments. Although absolute accuracy is lower by design than the "top of the line" models, the RTD-200 also offers GR's exclusive "no adder accuracy" and is the right unit for the job in a wide range of applications. 
PartsImage RTD-500
The RTD-500 programmable temperature simulator offers user-friendly programming with keypad data entry. The unit is programable via RS232 computer interface.