Spherical end (flat end available).High accuracy interchangeable rods changed from hole of base end. Ratchet stop.Run through interchangeable rods, provide a wide measuring range.Spherical end (flat end available) .High accuracy interchangeable rods.
Ratchet stop.
Run through interchangeable rods, provide a wide measuring range.
Spherical end (flat end available) .
High accuracy interchangeable rods.
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