The PosiTector SPG Surface Profile Gage measures and records peak to valley surface profile height according to ASTM D4417-B. The gage measures more than 50 readings per minute, to quickly and accurately assess surface profile over large surface areas. Download and transfer data via USB, Bluetooth, and cloud-based memory storage; no software required. Available with standard or advanced features. DeFelsko Corp. 800-448-3835.