Checking clamp and intelligent checking platform for locomotive instrument

The utility model relates to check fixture and engine checkout equipment, in particular to an engine pointer-instrument intelligent calibrator. Groove is set in the recessed insulating stool of the check fixture, and self-application universal socket joint is inside the groove; the intelligent ac and dc stand power supply engine pointer-instrument intelligent calibrator connects to the special check output control circuit, and the special check output control circuit is connected with the special check fixture. The utility model adopts a plurality of check fixtures so that the number of meters of the same type could be checked at a time is three at most; and the utility model adopts fixed check model to read, which improves check precision and greatly quickens check speed.