A new ultrasonic gage that measures the thickness of fiberglass walls usually to within 0.01 inch has been developed by Krautkramer-Branson, Inc., Stratford, Conn.
The instrument, known as Model 202F, permits the nondestructive thickness measurement of fiberglass products such as boat hulls, pipes, storage tanks, and pressure vessels. The instrument makes its measurements from only one surface of the materials.
Because the instrument works by bouncing sound waves off surfaces or discontinuities in the material, it instantly reveals flaws such as delaminations and air bubbles. The 15-ounce instrument gives precise readings on most fiberglass compositions at thicknesses up to three and one-half inches.
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