INOP420/INOP430 Video Melting Point Apparatus, and INOP450/INOP470/INOP490 Automatic Video Melting Point Apparatus, perfectly integrate video technology into melting point measuring. It not only provides users with reliable melting point test result, but also intuitively displays temperature curve and real-time video image, and achieves the function of save, replay the video,stamp video and so on. It also provides better help for users to observe melting process of sample.