Ruler by KHTSXR is a virtual measuring tool that can be adjusted to actual size. This mini tapeline app and scale ruler app helps you measure any object with a red line, in millimeters or inches. Before using it, you need to set the real inch or millimeter to your own device. You can calibrate a ruler using the calibration button located on the right side down. This app is very user-friendly and easy to use.

The app is perfect for DIY enthusiasts, designers, and anyone who needs to take accurate measurements. The virtual ruler can be used to measure anything, from the length of a piece of paper to the width of a room. The app is very handy and saves you the trouble of carrying a physical ruler or tape measure. Overall, Ruler is a great addition to your collection of utilities and tools apps.