LT - JC02 Ƙofar rufe injin gwaji
Wannan na'ura ya dace don gwada ƙarfin rufe kofa akan ƙofofin kayan ado. Haɗa samfurin tare da kayan aiki, kwaikwayi halin da ake ciki a cikin amfanin yau da kullun, buɗewa da rufe ƙofa akai-akai, duba hinge bayan wasu adadin zagayowar.
Ko akwai lalacewa ko wasu yanayi da suka shafi amfani.