The mesh ruler is also called the warp and weft density meter. It is mainly used to measure the mesh count of various screens. The mesh ruler has two types: glass plate type and plastic sheet type. The measurement method is: when measuring, first make the screen in a transparent state or put it on the screen table, put the mesh ruler on the screen, and then slowly move the mesh ruler on the screen to make the vertical line on the mesh ruler parallel to the warp or weft of the screen. At this time, due to the overlapping effect of the warp and weft of the screen and the vertical line on the mesh ruler, a diamond pattern is formed on the mesh ruler. The horizontal diagonal of the pattern points to the corresponding scale number on the mesh ruler, which is the number of the measured screen (inches or centimeters).
The mesh ruler is a common tool for measuring the mesh count of the screen. Usually, to maintain the accuracy of the measuring instrument and the accuracy of the measurement data, it is necessary to keep the mesh ruler clean to prevent scratches and bumps on the mesh ruler. After use, the instrument should be wiped clean and properly stored