00000nam 2200000zi 4500 9.867739 CaOODSP 20221107162407 m o d f cr ||||||||||| 190129s1958 onc ot f|0| 0 eng d CaOODSP eng rda CaOODSP n-cn--- M38-1/36-1958E-PDF Buchanan, J. G., author. The measurement of wall thickness of metal from one side only, by the direct current conduction method / by J. G. Buchanan, F. W. Marsh and R. C. A. Thurston. Ottawa, Ontario : Department of Mines and Technical Surveys, 1958. 1 online resource ( [7] pages) text txt rdacontent computer c rdamedia online resource cr rdacarrier Mines Branch Research Report ; R 36 "Reprinted from Jan.-Feb. 1958 issue of Nondestructive Testing." Title from cover. Includes bibliographic references. "A direct-current conduction method is described for the measurement of wall thickness of metal from one side only. Essentially the method involves the measurement of the resistance of an area, roughly circular, by means of a 4-electrode array; an increase in the 'resistance' indicates a decrease in thickness, and vice versa"--Abstract. gccst Metals Marsh, F. W., author. Thurston, R. C. A., author. Canada. Department of Mines and Technical Surveys. Canada. Mines Branch. Research report (Canada. Mines Branch) R 36. (CaOODSP)9.855660 PDF 1.02 MB https://publications.gc.ca/collections/collection_2019/rncan-nrcan/m38-1/M38-1-36-1958-eng.pdf