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Telescopic Levelling Staffs
Telescopic Levelling Staffs are the instruments specially designed for surveying and mapping the earth.
They are applicable to the survey of the terrain for the construction of projects,including railways,high ways, water conservancy facilities, farmland and national defence works.
The tower rulers are peculiar in the materials,printing and manufacturing processes.
They are characteristic of easy operation and durable service.
Our tower rulers really win the favor of both domestic and foreign customers.
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