Alternatively, you can also use the crop tool to quickly straighten images without drawing a ruler line. To do this, simply select the layer with the image you want to straighten, draw a reference line using your ruler (horizontal or vertical), then select the options “Image,” “Rotation,” and “Arbitrary”. The ruler tool can be used to straighten images. If you need to make another measurement, begin the process again by clicking and dragging the ruler tool over the area you want to measure. Once you’re done measuring an image, click on the “Clear” button to remove the current measurement. As you drag, the ruler tool will measure the area and display the measurement units in the ruler options bar.

Once you have confirmed that it is visible, click and drag the ruler tool in your open image document window. To draw a measuring line, the ruler tool options bar must be visible. A drop-down menu will appear with a selection of choices, including inches, points, millimeters, centimeters, pica and percent. The Photoshop ruler displays pixels by default, but you can change the unit of measurement as desired by right-clicking on the ruler. You can also use the shortcut “Ctrl-R” to do the same thing. If you can’t see the ruler tool in Photoshop, click on your “View” header and select “Rulers”.

Power point ruler tool