The characteristics of this flowmeter are designed with a triangle, and the main body's vertical edge shape is different from the traditional round shape. On the one hand, the triangular feature points of the front cover emphasize serialization features and increase brand recognition. On the other hand, it neutralizes the strong feeling of products, enhances the sense of science and technology, integrates screw features, increases the force of hand rubbing in practical functions, and emphasizes the attributes of equipment and stability.