【實用工具app】Ruler | A Curious Tool|最夯免費app-綠色工廠好玩App

Measure and compare objects around you! With Ruler, users can explore and measure objects around them and learn about sizes, units of measure, and proportions. * Simply pick a known reference object in Ruler, like a coin or a sheet of paper, then select an object you’d like to measure. * Place these objects side-by-side and take a picture. * Ruler provides sliders to measure the objects and compares their relative sizes. * Switch between the US and Metric measurement system. 36 Reference objects to choose from including: - US and World coins and paper bills - iPhone and iPad - Credit Card - Crayon - Lego and Duplo bricks - CD/DVD - US and A4 paper sheets - soccer, tennis, basket, baseball, golf, football balls - soda can Note for parents and educators:The app shows iAds.If you want an ad free version of this app, please download Curious Ruler