Abstract
WE have received for examination from Messrs. R. and J. Beck an example of their “Standard London Petrological Microscope,” which they have recently designed for the use of students. It embodies some of the recommendations of a committee of the British Science Guild, which carefully considered the subject (Journal of the British Science Guild, November, 1916, pp. 28-30). The microscope, which is strongly built and stands firmly, has the following distinctive features:
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A Petrological Microscope. Nature 109, 58–59 (1922). https://doi.org/10.1038/109058a0
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DOI: https://doi.org/10.1038/109058a0