If you want to change rulers in Photoshop, there are a few different ways to go about it. The easiest way is to use the rulers tool (Window > Rulers). You can also use the keyboard shortcuts (Ctrl+R and Ctrl+L), or select the ruler tool from the toolbar. If you want to change the size of the rulers, you can do this by selecting the ruler tool and clicking on one of the corner markers. You can also change the color of the rulers by selecting the color swatch next to the ruler tool icon. ..