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H G Jerrard1
Published under licence by IOP Publishing Ltd
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Citation H G Jerrard 1950 J. Sci. Instrum. 27 62
DOI 10.1088/0950-7671/27/3/303
This article is corrected by 1950 J. Sci. Instrum. 27 107
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Some possible errors in the construction of a Babinet compensator are given. The effects of these errors are discussed from the point of view of their detection. Full experimental details are given of the various optical methods used in examining a compensator. Various considerations in design are mentioned and the method of calibration is described.