Method for measuring deflection and its convenient measuring instrument for deflection

The invention discloses a method for measuring deflection and its convenient measuring instrument for deflection. When a dial indicator or a micrometer is used to measure the deflection of a component to be measured, the central part at the bottom of the dial indicator or the micrometer is provided with a table tip, and the two sides of the dial indicator or the micrometer are provided with an adjustable arm whose length can be adjusted. The front end of each adjustable arm is provided with a foot. When the measuring instrument is in use, the two feet are closely attached to the surface of the component to be measured or the vertical rod part and the table tip at the central part of the dial indicator or the micrometer abuts closely against the flat surface or the vertical rod of the component to be measured. When the length distance between two feet is L and the number indicated by the dial indicator or the micrometer is V, then the deflection of the component can be obtained as V. According to the invention