Waygate Technologies DA 501 [0500495] Probe, 5 MHz, Range 1.0 - 200 mm In Steel (Requires KBA-533 cable). Standard 5 MHz probe for measuring 0.04 to 8 inches (1 to 200mm) in steel. To get the best Reseller priced Offers for (Waygate Technologies DA 501 Thickness Probe. Waygate Technologies ) and the complete range of Waygate Technologies  products, use the Quick Pricing Request Form.