Description <br> Features: Brand new and high quality <br> Achieve accurate multimeter calibration with Resistance Reference Board, suitable for AD584 and LM399. <br> Provides precise calibration result with its 0.1% resistance and 25PPM resistance reference board. <br> Suitable for electronic engineers, instrument maintenance personnel, and laboratory technicians in need of precise instrument calibration. <br> Perfect for instrument calibration and verification in laboratory and production setting. <br> Convenient design for easy carrying and usage during field testing and debugging, ensuring accurate measurements. <br> <br> Specifications: Material:PCB <br> <br> Package Includes: 1Pc Precision Resistance Reference Board <br> <br> note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you not mind before order. <br> 2.Due to the differences between different monitors, the picture may not reflect the actual of the item. <br>