First, physical indicators Pixel center distance from pixel pitch The distance between the centers of adjacent pixels. (Unit: mm) Density (points) The number of pixels per unit area (unit: point / m2). There is a certain computational relationship between points and the same point spacing. The calculation formula is: density = (1000 ÷ pixel center distance). The higher the density of the LED display , the sharper the image and the smaller the optimal viewing distance range. Optimum line of sight View distance icon Capillary Tube Manometer Pressure Gaug,Capillary Tube Manometer Pressure Gauge,Plastic Pipe Manometer,Capillary Tube ZHOUSHAN JIAERLING METER CO.,LTD , https://www.zsjrlmeter.com