Bubble level (bubble ruler) and angle meter provide more practical tools than others do. Straight ruler, 2D ruler, spirit level, and protractor (angle meter ) are all in this portable bubble level. These two rulers are used to measure the length and width of an object; the protractor is used to measure the angle by setting three points while keeping the lines on the border of the object. The bubble level is used to detect whether an object is inclined both in vertical and horizontal aspects. Download free Measurement APK files from the cadbull.com website. Download the apk file for free now.