Less flow blockage Available with 9 inch probe Ideal for measuring in confined spaces Fast response time Range: 25–10,000 ft/min (0.125–50 m/s) Less flow blockage Ideal for measuring in confined spaces > Each Unit Includes 9 Probe attached to 16.4-ft (5-m) cable connected to control module Protective sleeve Compression fittings for mounting in duct work Two holding clips to mount probe to parallel surface Operation and service manual NIST calibration certificate Two-year limited warranty