The DeFelsko PRBSPG is an integral PosiTector SPG surface profile probe for measuring peak-to-valley surface profile heights on blasted steel. It uses a digital depth micrometer design with a fine pointed probe, a durable alumina wear face, and a tungsten carbide tip for long service life and consistent accuracy. The probe is compatible with the PosiTector interchangeable gage body platform and is used for surface preparation inspection before coating application.Specs Brand: DeFelsko MPN: PRBSPG Product Type: Surface Profile Probe Series: PosiTector SPG Probe Style: Integral Application: Surface profile measurement on blasted steel Measurement Range: 0–500 μm / 0–20 mils Accuracy: ±(5 μm + 5%) / ±(0.2 mils + 5%) Tip Angle: 60° Tip Radius: 50 μm / 2 mils Wear Face: Alumina Tip Material: Tungsten carbide Compatible Platform: PosiTector interchangeable gage bodies Standards: ASTM D4417-B and others Selling Unit: Each