Problem: Measuring the inside diameter of tubes and holes has often been expensive and inaccurate and in many instances impossible. Manufacturers have measured outside diameter of pipe and hose during extrusion or seam welding for years thereby eliminating scrap caused by bad outside diameters. These manufacturers always wanted to measure inside diameter during tube production, but no one offered an instrument to do so. Also, the traditional method of measuring inner diameters off-line, e.g. plug gauges, is expensive and requires frequent and costly recalibration.
Solution: Air Force Research Laboratory Sensors Directorate (AFRL/SN) under a Cooperative Research and Development Agreement (CRADA) with Gauge & Measurement Technologies, Ltd. (GMT) of Dayton, Ohio, developed a laser based device called Tunnel GaugeTM for measuring interior dimensions of tubular or hollow structures. The Tunnel Gauge accommodates a broad range of tubular structures from several feet in diameter to less than 1" in diameter with accuracy to .002".
GMT in conjunction with Kirkendall Metrology Inc. (KMI), is actively pursuing potential customers and have received numerous inquiries about the Tunnel Gauges from manufacturers of extruded hose and tubing, naval cannon barrels, aircraft engine bellows, automobile brake calipers, cold-rolled metal tubing and others. An order for the first Tunnel Gauge was placed by a hydraulic cylinder manufacturer.
Send comments or questions to the WTN Webmaster
Internet and Web
Services provided by HCST*Net.
A Service of Hassler Communication Systems Technology, Inc.