S1 GPS Land Area Measurement , 2.4 Inch GPS Land Measurement Device
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GPS Land Survey Area Distance Surveying Handheld GPS Surveying Units How to Trun On/Trun Off The Handheld GPS Surveying Units: 1. Turn on: With the equipment off,hold the "Stop" button until the screen remains on and the voice ring(about 2 sec),“welcome......
Chengdu Wanggan Technology Co., Ltd.
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