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The SinoGNSS DS3-SN32 is an automatic (self-levelling) optical level used to establish and check horizontal reference lines during levelling surveys.

The SinoGNSS DS3-SN36 is an automatic (self-levelling) optical level used to establish and check horizontal reference lines during levelling surveys.

It is mainly aimed at high-precision measurement of construction projects, mines, roads and bridges, etc. Easy to operate, clear imaging, Waterproof f..