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This idea is about a design of digital height gauge. There is a infrared sensor on the back of it. When you put it on the top of your head horizontally, the infrared seneor can receive a singal, and then a height is measured by processor, finaly the data is projected. Not only we can measure our height, but also we can measure other things.So the digital height gauge is convenient.
Shandong University
Jinan City,Shandong Prov, China
Shandong University
Jinan City,Shandong Prov, China
Fujian Yuan