Measuring Cup

Knowing how much water in the cup seems as easy as we look at it. But for people who can not see, they measure liquid by putting their fingers inside of the cup. Inspired by the direct connection to the liquid, the measuring cup embracing touch through the holes on the cup. The user blocks the holes by fingers slightly to feel the amount of water. It's efficient to prevent spilling. The cups is made out of high quality quartz glass. Each cup holds one cup (250 ml) water. The tall cups could measure 1/4 cup (62.5 ml), 1/2 cup (125 ml), 1 cup (250 ml).