This fingertip-size microscope—which weighs a half-gram (0.02 oz.) and easily attaches to any smartphone camera lens with a nano suction pad—magnifies small objects up to 200 times. According to Shanghai-based QingYing E&T, the microscope is ideal for “large micro” objects, like insects or gears inside watches. Photography enthusiasts and kids getting into science can enjoy a closer look at the world for a small fraction of the cost of a traditional microscope. An optional µRuler (micro-ruler) measures micro-objects and calibrates the scale bar in a companion app.