For True Measurements of Inches, CM and Pica
Because your computer does not know the physical dimensions of your monitor, it may be necessary to do a very quick calibration:
| 1. | Hold an actual ruler horizontally against the screen, and with BitRule running, click first beside the start of the ruler, and then again at a convenient major division, such as 10 inches or 25 cm. |
| 2. | If the measurement shown in BitRule differs from the true measurement, then complete the next step |
| 3. | Click on the calibrate .exe/{app}/BitRule.chm/resolution.png){kind=small} button, and adjust the resolution up or down until BitRule shows the correct measurement |