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An ultrasonic thickness gauge is a measuring instrument for the non-destructive investigation of a material's thickness using ultrasonic waves. The usage of an ultrasonic thickness gauge for non-destructive testing to check material properties such as thickness measurement, is regular in all areas of industrial measurements.
Non-destructive testing measurements may include: Ultrasonic thickness measurement; Ultrasonic crack detection; Measurements of visibility, using Secchi discs and similar methods, and spot measurements of other physical and chemical characteristics by local measurementor recording by a diver, or sampling of the water and bottom composition.
The 1980 Annual World's Best SF is an anthology of science fiction short stories edited by Donald A. Wollheim and Arthur W. Saha, the ninth volume in a series of nineteen. It was first published in paperback by DAW Books in May 1980, followed by a hardcover edition issued in September of the same year by the same publisher as a selection of the Science Fiction Book Club.
A common example is ultrasonic thickness measurement, which tests the thickness of the test object, for example, to monitor pipework corrosion and erosion. Ultrasonic testing is extensively used to detect flaws in welds.
The 1978 Annual World's Best SF is an anthology of science fiction short stories edited by Donald A. Wollheim and Arthur W. Saha, the seventh volume in a series of nineteen. It was first published in paperback by DAW Books in May 1978, followed by a hardcover edition issued in August of the same year by the same publisher as a selection of the Science Fiction Book Club.
The 1981 Annual World's Best SF is an anthology of science fiction short stories edited by Donald A. Wollheim and Arthur W. Saha, the tenth volume in a series of nineteen. It was first published in paperback by DAW Books in May 1981, followed by a hardcover edition issued in August of the same year by the same publisher as a selection of the Science Fiction Book Club.
The 1974 Annual World's Best SF is an anthology of science fiction short stories edited by Donald A. Wollheim and Arthur W. Saha, the third volume in a series of nineteen. It was first published in paperback by DAW Books in May 1974, followed by a hardcover edition issued in September of the same year by the same publisher as a selection of the Science Fiction Book Club.
The 1983 Annual World's Best SF is an anthology of science fiction short stories edited by Donald A. Wollheim and Arthur W. Saha, the twelfth volume in a series of nineteen. It was first published in paperback by DAW Books in May 1983, followed by a hardcover edition issued in September of the same year by the same publisher as a selection of the Science Fiction Book Club.