Granite measuring box is mainly used to measure the parallelism and perpendicularity of the workpiece and support the wor...
The granite inspection box is a vertical and parallel frame type combination, which mainly uses the vertical and parallel...
As the datum plane for all kinds of detailed measurement and inspection, granite square box is often used for the inspect...
The marble square box is mainly used for the examination and marking of the parallelism and perpendicularity of parts and...
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