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Arc valley positioning axis is suitable for the special instrument of fiber cement wave distance.
How to use arc valley positioning axis
Place the arc valley positioning axis in the adjacent wave valley of the wave tile. The tapered end of the arc valley positioning axis protrudes from the end of the tile. Use a steel ruler to measure the distance between the two cone tops. The average value is rounded to 0.5mm.
(Outer diameter of positioning shaft φB = 37mm, length 180, inner diameter φ20mm, height 20 + 40mm)