Mitutoyo 178-390 Standard Detector for the Surface Testers, 4mN Brand: Mitutoyo ID#: 178-390-MIT |MFGID: 178-390 Calibration Reference $491.88 Quantity discounts available QuantityPrice Qty -+ Add to Cart Share Product Info Product Information Description Mitutoyo 178-390 Standard Detector for the Surface Testers, 4mN Detector used with Surface roughness testers in various applications. Diamond stylus tip for precision detection. Specifications