Length of time / Timepiece

When managing our time, we cannot feel the process intuitively. When we have to finsigh some tasks in a certain time, the management is very important. Length of Time is such a tool can help you manage time. It takes the way like a Chinese ancient tradition, Jieshengjishi. When we need to record a certain time period, we can pull out the line and make a knot at the right position. Different sizes of knots corresponds the importance of different tasks. Then the device will be triggered automaticlly. With the time going on, the light of the rope will get dim gradually. When getting to the set time, the equipment will alarm.