Thickness gauge. (Instruments).

The Model 25 Multi Plus advanced precision thickness gauge is said to make very accurate one-sided measurements on most engineering materials of varying shapes and sizes. One feature is the gauge's ability to calculate and simultaneously display the thickness measurements of various layers in a multilayered part. Using special stored setups for each layer (such as the sound velocity), the gauge will display up to four individual layers and total thickness of selected layers. Another feature is the barrier layer mode, which makes it possible to measure very thin barrier layers in multilayered parts. This mode displays the thickness of thin barrier layers that are typically too difficult to measure with conventional ultrasonic thickness gauges because of lack of separation between the echo from the front and back of the barrier layer, according to the company. (Panametrics, NDT Division, 221 Crescent St., Waltham, MA 02453)

Circle 83 on card

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